#66221D
Closest named color: Reddy Brown (#6E1005). oklch(35.5% 0.099 27.4), rgb(102, 34, 29).
Aa
White text reads best on this color (11.59:1).
About this color
#66221D is a dark, moderately saturated red. In OKLCH its lightness is 36%, its chroma 0.099 and its hue 27°. Its hue sits on the warm side of the wheel. The nearest named color is Reddy Brown (#6E1005), ΔE 0.031 away. White text reads best on it, at 11.59:1.
| Hue family | Reds |
| Lightness | dark (36%) |
| Chroma | moderately saturated (0.099) |
| Temperature | warm |
| Nearest name | Reddy Brown (#6E1005) |
| Black text | 1.81:1 |
| White text | 11.59:1 |
Values
| HEX | #66221D |
| RGB | rgb(102, 34, 29) |
| HSL | hsl(4, 56%, 26%) |
| OKLCH | oklch(35.5% 0.099 27.4) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #66221D | 11.59:1 | AAA | Lc -99.7 | Preferred for body text |
| Black text on #66221D | 1.81:1 | Fails | Lc 7.9 | Not readable |
| #66221D text on white | 11.59:1 | AAA | Lc 96.0 | Preferred for body text |
| #66221D text on black | 1.81:1 | Fails | Lc 0.0 | Not readable |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 900.
-
Step 50
50
#FCF3F2
oklch(97.1% 0.01 25.1)
-
Step 100
100
#F8E5E2
oklch(93.6% 0.021 28.3)
-
Step 200
200
#F3CFCA
oklch(88.4% 0.041 27.3)
-
Step 300
300
#EDAFA6
oklch(80.9% 0.074 28.1)
-
Step 400
400
#E18277
oklch(70.7% 0.119 27.5)
-
Step 500
500
#D65F54
oklch(63.1% 0.152 27.5)
-
Step 600
600
#C14139
oklch(55.6% 0.165 27.4)
-
Step 700
700
#A6322B
oklch(49.1% 0.153 27.7)
-
Step 800
800
#872B25
oklch(42.7% 0.127 27.5)
-
Step 900
900 (this color)
#66221D
oklch(35.5% 0.099 27.4)
-
Step 950
950
#401815
oklch(26.9% 0.063 26.5)
#66221D with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #34301C | 0.105 |
| Deuteranopia (no green cones) | #453E1B | 0.096 |
| Tritanopia (no blue cones) | #701321 | 0.032 |
| Achromatopsia (no color) | #393939 | 0.100 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #66221D
#66221D
oklch(35.5% 0.099 27.4)
- #00454C
#00454C
oklch(35.7% 0.061 206.3)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #66221D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Reddy Brown #6E1005 ΔE 0.031
- Chestnut #742802 ΔE 0.044
- Claret #680018 ΔE 0.046
- Blood #770001 ΔE 0.048
- Wine Red #7B0323 ΔE 0.055
- Burgundy #610023 ΔE 0.059
- Maroon #800000 ΔE 0.060
- Bordeaux #7B002C ΔE 0.063
Use #66221D in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.