BLUE

Yale Blue

#004F98

Conversions

HEX#004F98

RGBrgb(0, 79, 152)

HSLhsl(209, 100%, 30%)

HSVhsv(209, 100%, 60%)

CMYKcmyk(100%, 48%, 0%, 40%)

Copy CSS

color: #004f98;
/* rgb  */ color: rgb(0, 79, 152);
/* hsl  */ color: hsl(209, 100%, 30%);

Contrast

On whitePass · 8.17 : 1

On ink blackFail · 2.34 : 1

Shades

Tints

Pairings

About Yale Blue

Yale Blue is the hex color #004F98, which translates to rgb(0, 79, 152) in RGB and hsl(209, 100%, 30%) in HSL. On the color wheel it sits at 209 degrees, with a saturation of 100 percent and a lightness of 30 percent. That combination gives Yale Blue a saturated mid tone: strong enough for buttons and links, still calm enough for larger areas.

How Yale Blue compares

The closest standard CSS keyword is darkslateblue (#483D8B), a CIE76 distance of 17.5 away in CIELAB. That is a visible difference, so the keyword is not a substitute here. In the Tailwind CSS 4.3.1 palette the nearest token is sky-700 (#0069A8), at a distance of 14.5. Inside this library the closest neighbour is Denim at 13.1. Sorted by lightness, Yale Blue is number 5 of the 30 blue colors here.

Text on Yale Blue

2 of the five common text colors below clear WCAG AA for normal text on Yale Blue, led by White at 8.17:1. The ratios are computed with the WCAG relative luminance formula, the same one the contrast checker uses, which opens with Yale Blue already loaded as the background.

Contrast of common text colors on Yale Blue. AA normal text needs 4.5:1, AA large text and non-text elements need 3:1, AAA normal text needs 7:1.
Text color	Ratio	AA normal	AA large	AAA normal
White #FFFFFF	8.17:1	Pass	Pass	Pass
Ink black #0F0F12	2.34:1	Fail	Fail	Fail
Mid grey #6B7280	1.69:1	Fail	Fail	Fail
Dark grey #374151	1.26:1	Fail	Fail	Fail
Light grey #E5E7EB	6.60:1	Pass	Pass	Fail

Building a palette around Yale Blue

The pairings above give you three classic starting points. The complementary color sits opposite on the wheel and works well as an accent that draws the eye. The analogous colors sit right beside Yale Blue for calmer, harmonious combinations. The triadic pair spaces three hues evenly for a balanced, energetic palette. Open any swatch to explore it as its own color.

Full values for Yale Blue

Format	Value
HEX	#004F98
RGB	rgb(0, 79, 152)
HSL	hsl(209, 100%, 30%)
HSV	hsv(209, 100%, 60%)
CMYK	cmyk(100%, 48%, 0%, 40%)
OKLCH	oklch(43.06% 0.1366 253.89)
CIELAB	lab(33.68 9.10 -45.58)

Use Yale Blue in a tool

Nearby colors

Last updated 5 August 2026 by FusionStudios. Every value on this page is computed by the same functions the tools use. How this is calculated.