#D4310B
Closest named color: Tomato Red (#EC2D01). oklch(56.9% 0.204 33.1), rgb(212, 49, 11).
Aa
White text reads best on this color (4.94:1).
About this color
#D4310B is a medium-dark, vivid red. In OKLCH its lightness is 57%, its chroma 0.204 and its hue 33°. Its hue sits on the warm side of the wheel. The nearest named color is Tomato Red (#EC2D01), ΔE 0.047 away. White text reads best on it, at 4.94:1.
| Hue family | Reds |
| Lightness | medium-dark (57%) |
| Chroma | vivid (0.204) |
| Temperature | warm |
| Nearest name | Tomato Red (#EC2D01) |
| Black text | 4.24:1 |
| White text | 4.94:1 |
Values
| HEX | #D4310B |
| RGB | rgb(212, 49, 11) |
| HSL | hsl(11, 90%, 44%) |
| OKLCH | oklch(56.9% 0.204 33.1) |
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 #D4310B | 4.94:1 | AA | Lc -78.1 | Fine for body text |
| Black text on #D4310B | 4.24:1 | AA large text | Lc 31.5 | Non-text elements, placeholder text |
| #D4310B text on white | 4.94:1 | AA | Lc 72.6 | Content text, not long reading |
| #D4310B text on black | 4.24:1 | AA large text | Lc -29.1 | 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
#FEF3F0
oklch(97.2% 0.013 35.7)
-
Step 100
100
#FBE4DF
oklch(93.6% 0.026 32.2)
-
Step 200
200
#F9CEC4
oklch(88.6% 0.051 33.3)
-
Step 300
300
#F6AB9A
oklch(80.9% 0.092 33.3)
-
Step 400
400
#ED7B62
oklch(70.7% 0.146 33.6)
-
Step 500
500
#E45135
oklch(63.1% 0.188 32.9)
-
Step 600
600 (this color)
#D4310B
oklch(56.9% 0.204 33.1)
-
Step 700
700
#B02300
oklch(49.2% 0.18 33.2)
-
Step 800
800
#911B00
oklch(42.6% 0.157 33.2)
-
Step 900
900
#751F0E
oklch(37.7% 0.123 33)
-
Step 950
950
#45140A
oklch(27% 0.078 33.4)
#D4310B 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 | 0.215 |
| Deuteranopia (no green cones) | #8D7D00 | 0.193 |
| Tritanopia (no blue cones) | #EA002C | 0.054 |
| Achromatopsia (no color) | #707070 | 0.205 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #D4310B
#D4310B
oklch(56.9% 0.204 33.1)
- #00869A
#00869A
oklch(57% 0.1 212.9)
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 #D4310B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Tomato Red #EC2D01 ΔE 0.047
- Brick Orange #C14A09 ΔE 0.048
- Sinopia #BB3E03 ΔE 0.050
- Deep Orange #DC4D01 ΔE 0.050
- Crimson #DC143C ΔE 0.052
- Faded Red #D3494E ΔE 0.055
- Burnt Orange #C04E01 ΔE 0.055
- Cherry #CF0234 ΔE 0.056
Use #D4310B 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.