#A21712
Closest named color: Burnt Red (#9F2305). oklch(45.8% 0.173 28.7), rgb(162, 23, 18).
Aa
White text reads best on this color (7.87:1).
About this color
#A21712 is a medium-dark, vivid red. In OKLCH its lightness is 46%, its chroma 0.173 and its hue 29°. Its hue sits on the warm side of the wheel. The nearest named color is Burnt Red (#9F2305), ΔE 0.017 away. White text reads best on it, at 7.87:1.
| Hue family | Reds |
| Lightness | medium-dark (46%) |
| Chroma | vivid (0.173) |
| Temperature | warm |
| Nearest name | Burnt Red (#9F2305) |
| Black text | 2.66:1 |
| White text | 7.87:1 |
Values
| HEX | #A21712 |
| RGB | rgb(162, 23, 18) |
| HSL | hsl(2, 80%, 35%) |
| OKLCH | oklch(45.8% 0.173 28.7) |
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 #A21712 | 7.87:1 | AAA | Lc -90.3 | Preferred for body text |
| Black text on #A21712 | 2.66:1 | Fails | Lc 18.6 | Dividers and decoration only |
| #A21712 text on white | 7.87:1 | AAA | Lc 85.5 | Fine for body text |
| #A21712 text on black | 2.66:1 | Fails | Lc -16.6 | Dividers and decoration only |
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 800.
-
Step 50
50
#FFF2F0
oklch(97.1% 0.014 28)
-
Step 100
100
#FDE3DF
oklch(93.6% 0.029 28.1)
-
Step 200
200
#FCCCC4
oklch(88.5% 0.056 29.2)
-
Step 300
300
#FBA89B
oklch(80.9% 0.101 29.2)
-
Step 400
400
#F57364
oklch(70.7% 0.163 28.5)
-
Step 500
500
#EC4437
oklch(63% 0.207 28.8)
-
Step 600
600
#D8080B
oklch(55.6% 0.225 28.7)
-
Step 700
700
#B80005
oklch(49.2% 0.201 28.7)
-
Step 800
800 (this color)
#A21712
oklch(45.8% 0.173 28.7)
-
Step 900
900
#791610
oklch(37.6% 0.134 28.9)
-
Step 950
950
#48100B
oklch(27.1% 0.086 29)
#A21712 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) | #473E0E | 0.188 |
| Deuteranopia (no green cones) | #685C06 | 0.170 |
| Tritanopia (no blue cones) | #B30019 | 0.035 |
| Achromatopsia (no color) | #525252 | 0.174 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #A21712
#A21712
oklch(45.8% 0.173 28.7)
- #00636F
#00636F
oklch(45.8% 0.079 209.2)
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 #A21712, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Burnt Red #9F2305 ΔE 0.017
- Auburn #9B2226 ΔE 0.021
- Carmine #9D0216 ΔE 0.022
- Deep Red #9A0200 ΔE 0.026
- Brown #A52A2A ΔE 0.028
- Rufous #AE2012 ΔE 0.030
- Rust Red #AA2704 ΔE 0.031
- Blood Red #980002 ΔE 0.031
Use #A21712 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.