#D03101
Closest named color: Sinopia (#BB3E03). oklch(56.1% 0.201 34.2), rgb(208, 49, 1).
Aa
White text reads best on this color (5.09:1).
About this color
#D03101 is a medium-dark, vivid red. In OKLCH its lightness is 56%, its chroma 0.201 and its hue 34°. Its hue sits on the warm side of the wheel. The nearest named color is Sinopia (#BB3E03), ΔE 0.042 away. White text reads best on it, at 5.09:1.
| Hue family | Reds |
| Lightness | medium-dark (56%) |
| Chroma | vivid (0.201) |
| Temperature | warm |
| Nearest name | Sinopia (#BB3E03) |
| Black text | 4.12:1 |
| White text | 5.09:1 |
Values
| HEX | #D03101 |
| RGB | rgb(208, 49, 1) |
| HSL | hsl(14, 99%, 41%) |
| OKLCH | oklch(56.1% 0.201 34.2) |
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 #D03101 | 5.09:1 | AA | Lc -78.9 | Fine for body text |
| Black text on #D03101 | 4.12:1 | AA large text | Lc 30.6 | Non-text elements, placeholder text |
| #D03101 text on white | 5.09:1 | AA | Lc 73.5 | Content text, not long reading |
| #D03101 text on black | 4.12:1 | AA large text | Lc -28.2 | 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
#E35333
oklch(63.1% 0.185 34)
-
Step 600
600 (this color)
#D03101
oklch(56.1% 0.201 34.2)
-
Step 700
700
#AE2700
oklch(49.1% 0.176 34.2)
-
Step 800
800
#901E00
oklch(42.7% 0.153 34)
-
Step 900
900
#74210D
oklch(37.8% 0.12 34.4)
-
Step 950
950
#44150A
oklch(27% 0.075 34.5)
#D03101 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) | #645700 | 0.211 |
| Deuteranopia (no green cones) | #8B7B00 | 0.188 |
| Tritanopia (no blue cones) | #E6002B | 0.057 |
| Achromatopsia (no color) | #6E6E6E | 0.202 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #D03101
#D03101
oklch(56.1% 0.201 34.2)
- #008398
#008398
oklch(56.1% 0.099 214.1)
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 #D03101, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sinopia #BB3E03 ΔE 0.042
- Brick Orange #C14A09 ΔE 0.043
- Burnt Orange #C04E01 ΔE 0.051
- Deep Orange #DC4D01 ΔE 0.054
- Dull Red #BB3F3F ΔE 0.054
- Tomato Red #EC2D01 ΔE 0.055
- Cherry #CF0234 ΔE 0.056
- Crimson #DC143C ΔE 0.057
Use #D03101 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.