#A21306
Closest named color: Burnt Red (#9F2305). oklch(45.5% 0.176 30.2), rgb(162, 19, 6).
Aa
White text reads best on this color (7.97:1).
About this color
#A21306 is a medium-dark, vivid red. In OKLCH its lightness is 45%, its chroma 0.176 and its hue 30°. 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 7.97:1.
| Hue family | Reds |
| Lightness | medium-dark (45%) |
| Chroma | vivid (0.176) |
| Temperature | warm |
| Nearest name | Burnt Red (#9F2305) |
| Black text | 2.63:1 |
| White text | 7.97:1 |
Values
| HEX | #A21306 |
| RGB | rgb(162, 19, 6) |
| HSL | hsl(5, 93%, 33%) |
| OKLCH | oklch(45.5% 0.176 30.2) |
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 #A21306 | 7.97:1 | AAA | Lc -90.5 | Preferred for body text |
| Black text on #A21306 | 2.63:1 | Fails | Lc 18.4 | Dividers and decoration only |
| #A21306 text on white | 7.97:1 | AAA | Lc 85.7 | Fine for body text |
| #A21306 text on black | 2.63:1 | Fails | Lc -16.4 | 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
#FDE3DE
oklch(93.6% 0.03 30.6)
-
Step 200
200
#FDCCC3
oklch(88.5% 0.057 30.3)
-
Step 300
300
#FCA799
oklch(80.8% 0.103 29.8)
-
Step 400
400
#F67360
oklch(70.8% 0.165 30.1)
-
Step 500
500
#EE4230
oklch(63.1% 0.211 30)
-
Step 600
600
#D71200
oklch(55.7% 0.222 30.1)
-
Step 700
700
#B60E00
oklch(49.2% 0.196 30.2)
-
Step 800
800 (this color)
#A21306
oklch(45.5% 0.176 30.2)
-
Step 900
900
#7A150B
oklch(37.7% 0.137 30.2)
-
Step 950
950
#480F09
oklch(26.9% 0.087 29.9)
#A21306 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) | #463D01 | 0.192 |
| Deuteranopia (no green cones) | #685B00 | 0.170 |
| Tritanopia (no blue cones) | #B30014 | 0.036 |
| Achromatopsia (no color) | #515151 | 0.177 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #A21306
#A21306
oklch(45.5% 0.176 30.2)
- #00626F
#00626F
oklch(45.5% 0.079 210.5)
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 #A21306, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Burnt Red #9F2305 ΔE 0.017
- Carmine #9D0216 ΔE 0.022
- Deep Red #9A0200 ΔE 0.023
- Auburn #9B2226 ΔE 0.025
- Blood Red #980002 ΔE 0.028
- Rust Red #AA2704 ΔE 0.032
- Rufous #AE2012 ΔE 0.032
- Brown #A52A2A ΔE 0.034
Use #A21306 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.