#CB3945
Closest named color: Dull Red (#BB3F3F). oklch(56.6% 0.182 20.9), rgb(203, 57, 69).
Aa
White text reads best on this color (4.98:1).
About this color
#CB3945 is a medium-dark, vivid red. In OKLCH its lightness is 57%, its chroma 0.182 and its hue 21°. Its hue sits on the warm side of the wheel. The nearest named color is Dull Red (#BB3F3F), ΔE 0.032 away. White text reads best on it, at 4.98:1.
| Hue family | Reds |
| Lightness | medium-dark (57%) |
| Chroma | vivid (0.182) |
| Temperature | warm |
| Nearest name | Dull Red (#BB3F3F) |
| Black text | 4.21:1 |
| White text | 4.98:1 |
Values
| HEX | #CB3945 |
| RGB | rgb(203, 57, 69) |
| HSL | hsl(355, 58%, 51%) |
| OKLCH | oklch(56.6% 0.182 20.9) |
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 #CB3945 | 4.98:1 | AA | Lc -78.7 | Fine for body text |
| Black text on #CB3945 | 4.21:1 | AA large text | Lc 30.8 | Non-text elements, placeholder text |
| #CB3945 text on white | 4.98:1 | AA | Lc 73.3 | Content text, not long reading |
| #CB3945 text on black | 4.21:1 | AA large text | Lc -28.4 | 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 600.
-
Step 50
50
#FDF3F2
oklch(97.2% 0.011 24.3)
-
Step 100
100
#FAE4E3
oklch(93.6% 0.024 20.7)
-
Step 200
200
#F6CECC
oklch(88.5% 0.045 21.4)
-
Step 300
300
#F1ACAA
oklch(80.9% 0.082 20.9)
-
Step 400
400
#E77D7D
oklch(70.8% 0.131 20.9)
-
Step 500
500
#DC575C
oklch(63.1% 0.167 21)
-
Step 600
600 (this color)
#CB3945
oklch(56.6% 0.182 20.9)
-
Step 700
700
#AC2634
oklch(49.1% 0.169 20.9)
-
Step 800
800
#8C222C
oklch(42.8% 0.141 20.6)
-
Step 900
900
#702327
oklch(37.7% 0.109 21.1)
-
Step 950
950
#421617
oklch(27% 0.069 21.5)
#CB3945 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) | #625C44 | 0.199 |
| Deuteranopia (no green cones) | #877B41 | 0.182 |
| Tritanopia (no blue cones) | #DF003F | 0.049 |
| Achromatopsia (no color) | #707070 | 0.183 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #CB3945
#CB3945
oklch(56.6% 0.182 20.9)
- #00878D
#00878D
oklch(56.7% 0.096 200.3)
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 #CB3945, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dull Red #BB3F3F ΔE 0.032
- Faded Red #D3494E ΔE 0.033
- Dusty Red #B9484E ΔE 0.037
- Crimson #DC143C ΔE 0.040
- Lipstick #D5174E ΔE 0.042
- Cherry #CF0234 ΔE 0.043
- Deep Rose #C74767 ΔE 0.044
- Dark Coral #CF524E ΔE 0.044
Use #CB3945 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.