#CB1400
Closest named color: Scarlet (#BE0119). oklch(53.4% 0.212 30.4), rgb(203, 20, 0).
Aa
White text reads best on this color (5.77:1).
About this color
#CB1400 is a medium-dark, vivid red. In OKLCH its lightness is 53%, its chroma 0.212 and its hue 30°. Its hue sits on the warm side of the wheel. The nearest named color is Scarlet (#BE0119), ΔE 0.034 away. White text reads best on it, at 5.77:1.
| Hue family | Reds |
| Lightness | medium-dark (53%) |
| Chroma | vivid (0.212) |
| Temperature | warm |
| Nearest name | Scarlet (#BE0119) |
| Black text | 3.63:1 |
| White text | 5.77:1 |
Values
| HEX | #CB1400 |
| RGB | rgb(203, 20, 0) |
| HSL | hsl(6, 100%, 40%) |
| OKLCH | oklch(53.4% 0.212 30.4) |
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 #CB1400 | 5.77:1 | AA | Lc -81.9 | Fine for body text |
| Black text on #CB1400 | 3.63:1 | AA large text | Lc 27.6 | Dividers and decoration only |
| #CB1400 text on white | 5.77:1 | AA | Lc 76.5 | Fine for body text |
| #CB1400 text on black | 3.63:1 | AA large text | Lc -25.2 | 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
#FEF3F0
oklch(97.2% 0.013 35.7)
-
Step 100
100
#FCE4DF
oklch(93.7% 0.027 31.7)
-
Step 200
200
#FACDC4
oklch(88.5% 0.053 31.3)
-
Step 300
300
#F8AA9C
oklch(81% 0.095 30.5)
-
Step 400
400
#F07865
oklch(70.7% 0.152 30.5)
-
Step 500
500
#E74C39
oklch(63% 0.195 30.3)
-
Step 600
600 (this color)
#CB1400
oklch(53.4% 0.212 30.4)
-
Step 700
700
#B51100
oklch(49.1% 0.194 30.5)
-
Step 800
800
#941406
oklch(42.8% 0.163 30.5)
-
Step 900
900
#771C11
oklch(37.8% 0.127 30.6)
-
Step 950
950
#46120C
oklch(27% 0.081 29.8)
#CB1400 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) | #584D00 | 0.230 |
| Deuteranopia (no green cones) | #837300 | 0.203 |
| Tritanopia (no blue cones) | #E10015 | 0.045 |
| Achromatopsia (no color) | #666666 | 0.213 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #CB1400
#CB1400
oklch(53.4% 0.212 30.4)
- #007B8B
#007B8B
oklch(53.4% 0.093 210.6)
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 #CB1400, closest first.
No curated palette has a color within ΔE 0.04 of #CB1400.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Scarlet #BE0119 ΔE 0.034
- Cherry #CF0234 ΔE 0.038
- Lipstick Red #C0022F ΔE 0.043
- Sinopia #BB3E03 ΔE 0.051
- Firebrick #B22222 ΔE 0.051
- Crimson #DC143C ΔE 0.055
- Rusty Red #AF2F0D ΔE 0.055
- Dull Red #BB3F3F ΔE 0.056
Use #CB1400 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.