#D55B3A
Closest named color: Terra Cotta (#C9643B). oklch(62.1% 0.162 36), rgb(213, 91, 58).
Aa
Black text reads best on this color (5.38:1).
About this color
#D55B3A is a medium-light, vivid red. In OKLCH its lightness is 62%, its chroma 0.162 and its hue 36°. Its hue sits on the warm side of the wheel. The nearest named color is Terra Cotta (#C9643B), ΔE 0.027 away. Black text reads best on it, at 5.38:1.
| Hue family | Reds |
| Lightness | medium-light (62%) |
| Chroma | vivid (0.162) |
| Temperature | warm |
| Nearest name | Terra Cotta (#C9643B) |
| Black text | 5.38:1 |
| White text | 3.89:1 |
Values
| HEX | #D55B3A |
| RGB | rgb(213, 91, 58) |
| HSL | hsl(13, 65%, 53%) |
| OKLCH | oklch(62.1% 0.162 36) |
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 #D55B3A | 3.89:1 | AA large text | Lc -71.2 | Content text, not long reading |
| Black text on #D55B3A | 5.38:1 | AA | Lc 38.4 | Non-text elements, placeholder text |
| #D55B3A text on white | 3.89:1 | AA large text | Lc 65.7 | Content text, not long reading |
| #D55B3A text on black | 5.38:1 | AA | Lc -36.0 | Non-text elements, placeholder text |
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 500.
-
Step 50
50
#FCF3F1
oklch(97.1% 0.01 32.5)
-
Step 100
100
#F9E5DF
oklch(93.6% 0.023 37.4)
-
Step 200
200
#F4D0C5
oklch(88.5% 0.043 37.7)
-
Step 300
300
#EFAF9D
oklch(80.9% 0.08 36.3)
-
Step 400
400
#E38268
oklch(70.6% 0.126 35.9)
-
Step 500
500 (this color)
#D55B3A
oklch(62.1% 0.162 36)
-
Step 600
600
#C44018
oklch(55.6% 0.175 36.2)
-
Step 700
700
#A93007
oklch(49.1% 0.163 36.1)
-
Step 800
800
#892A0D
oklch(42.7% 0.135 36.2)
-
Step 900
900
#6E2814
oklch(37.7% 0.105 36.5)
-
Step 950
950
#41180D
oklch(27% 0.067 36)
#D55B3A 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) | #7C7036 | 0.162 |
| Deuteranopia (no green cones) | #9A8B37 | 0.148 |
| Tritanopia (no blue cones) | #EA4054 | 0.069 |
| Achromatopsia (no color) | #818181 | 0.162 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #D55B3A
#D55B3A
oklch(62.1% 0.162 36)
- #0096B1
#0096B1
oklch(62% 0.111 216.5)
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 #D55B3A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Terra Cotta #C9643B ΔE 0.027
- Terracotta #CA6641 ΔE 0.027
- Terracota #CB6843 ΔE 0.029
- Pale Red #D9544D ΔE 0.029
- Deep Orange #DC4D01 ΔE 0.033
- Rusty Orange #CD5909 ΔE 0.035
- Pastel Red #DB5856 ΔE 0.036
- Dark Coral #CF524E ΔE 0.036
Use #D55B3A 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.