#D23309
Closest named color: Brick Orange (#C14A09). oklch(56.7% 0.2 33.8), rgb(210, 51, 9).
Aa
White text reads best on this color (4.97:1).
About this color
#D23309 is a medium-dark, vivid red. In OKLCH its lightness is 57%, its chroma 0.200 and its hue 34°. Its hue sits on the warm side of the wheel. The nearest named color is Brick Orange (#C14A09), ΔE 0.044 away. White text reads best on it, at 4.97:1.
| Hue family | Reds |
| Lightness | medium-dark (57%) |
| Chroma | vivid (0.200) |
| Temperature | warm |
| Nearest name | Brick Orange (#C14A09) |
| Black text | 4.21:1 |
| White text | 4.97:1 |
Values
| HEX | #D23309 |
| RGB | rgb(210, 51, 9) |
| HSL | hsl(13, 92%, 43%) |
| OKLCH | oklch(56.7% 0.2 33.8) |
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 #D23309 | 4.97:1 | AA | Lc -78.3 | Fine for body text |
| Black text on #D23309 | 4.21:1 | AA large text | Lc 31.2 | Non-text elements, placeholder text |
| #D23309 text on white | 4.97:1 | AA | Lc 72.9 | Content text, not long reading |
| #D23309 text on black | 4.21:1 | AA large text | Lc -28.8 | 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 600.
-
Step 50
50
#FDF3F0
oklch(97.1% 0.012 37.4)
-
Step 100
100
#FBE4DF
oklch(93.6% 0.026 32.2)
-
Step 200
200
#F8CEC4
oklch(88.5% 0.05 33.6)
-
Step 300
300
#F5AC9A
oklch(81% 0.09 34.4)
-
Step 400
400
#EC7C62
oklch(70.7% 0.144 34.2)
-
Step 500
500
#E35334
oklch(63.1% 0.185 33.8)
-
Step 600
600 (this color)
#D23309
oklch(56.7% 0.2 33.8)
-
Step 700
700
#AF2500
oklch(49.1% 0.178 33.7)
-
Step 800
800
#901D00
oklch(42.6% 0.154 33.8)
-
Step 900
900
#74200E
oklch(37.7% 0.121 33.6)
-
Step 950
950
#44150A
oklch(27% 0.075 34.5)
#D23309 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) | #665900 | 0.211 |
| Deuteranopia (no green cones) | #8D7C00 | 0.188 |
| Tritanopia (no blue cones) | #E8002D | 0.057 |
| Achromatopsia (no color) | #707070 | 0.202 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #D23309
#D23309
oklch(56.7% 0.2 33.8)
- #00859A
#00859A
oklch(56.7% 0.1 213.9)
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 #D23309, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Brick Orange #C14A09 ΔE 0.044
- Sinopia #BB3E03 ΔE 0.045
- Deep Orange #DC4D01 ΔE 0.049
- Tomato Red #EC2D01 ΔE 0.050
- Burnt Orange #C04E01 ΔE 0.051
- Crimson #DC143C ΔE 0.055
- Dull Red #BB3F3F ΔE 0.055
- Faded Red #D3494E ΔE 0.056
Use #D23309 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.