RED

Sinopia

#CB410B

Conversions

HEX#CB410B

RGBrgb(203, 65, 11)

HSLhsl(17, 90%, 42%)

HSVhsv(17, 95%, 80%)

CMYKcmyk(0%, 68%, 95%, 20%)

Copy CSS

color: #cb410b;
/* rgb  */ color: rgb(203, 65, 11);
/* hsl  */ color: hsl(17, 90%, 42%);

Contrast

On whitePass · 4.88 : 1

On ink blackFail · 3.92 : 1

Shades

Tints

Pairings

About Sinopia

Sinopia is the hex color #CB410B, which translates to rgb(203, 65, 11) in RGB and hsl(17, 90%, 42%) in HSL. On the color wheel it sits at 17 degrees, with a saturation of 90 percent and a lightness of 42 percent. That combination gives Sinopia a saturated mid tone: strong enough for buttons and links, still calm enough for larger areas.

How Sinopia compares

The closest standard CSS keyword is chocolate (#D2691E), a CIE76 distance of 17.8 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 orange-700 (#CA3500), at a distance of 4.8. Inside this library the closest neighbour is Mahogany at 4.2. Sorted by lightness, Sinopia is number 8 of the 18 red colors here.

Text on Sinopia

One of the five common text colors below clears WCAG AA for normal text on Sinopia, led by White at 4.88:1. The ratios are computed with the WCAG relative luminance formula, the same one the contrast checker uses, which opens with Sinopia already loaded as the background.

Contrast of common text colors on Sinopia. 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	4.88:1	Pass	Pass	Fail
Ink black #0F0F12	3.92:1	Fail	Pass	Fail
Mid grey #6B7280	1.01:1	Fail	Fail	Fail
Dark grey #374151	2.11:1	Fail	Fail	Fail
Light grey #E5E7EB	3.94:1	Fail	Pass	Fail

Building a palette around Sinopia

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 Sinopia 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 Sinopia

Format	Value
HEX	#CB410B
RGB	rgb(203, 65, 11)
HSL	hsl(17, 90%, 42%)
HSV	hsv(17, 95%, 80%)
CMYK	cmyk(0%, 68%, 95%, 20%)
OKLCH	oklch(56.86% 0.1829 37.56)
CIELAB	lab(47.63 52.71 56.05)

Use Sinopia 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.