#CB3770
Closest named color: Dark Pink (#CB416B). oklch(57.4% 0.189 1.9), rgb(203, 55, 112).
Aa
White text reads best on this color (4.86:1).
About this color
#CB3770 is a medium-dark, vivid red. In OKLCH its lightness is 57%, its chroma 0.189 and its hue 2°. Its hue sits on the warm side of the wheel. The nearest named color is Dark Pink (#CB416B), ΔE 0.020 away. White text reads best on it, at 4.86:1.
| Hue family | Reds |
| Lightness | medium-dark (57%) |
| Chroma | vivid (0.189) |
| Temperature | warm |
| Nearest name | Dark Pink (#CB416B) |
| Black text | 4.31:1 |
| White text | 4.86:1 |
Values
| HEX | #CB3770 |
| RGB | rgb(203, 55, 112) |
| HSL | hsl(337, 59%, 51%) |
| OKLCH | oklch(57.4% 0.189 1.9) |
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 #CB3770 | 4.86:1 | AA | Lc -77.9 | Fine for body text |
| Black text on #CB3770 | 4.31:1 | AA large text | Lc 31.6 | Non-text elements, placeholder text |
| #CB3770 text on white | 4.86:1 | AA | Lc 72.5 | Content text, not long reading |
| #CB3770 text on black | 4.31:1 | AA large text | Lc -29.2 | 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
#FDF2F5
oklch(97.1% 0.012 358.8)
-
Step 100
100
#F9E3E8
oklch(93.5% 0.025 2.1)
-
Step 200
200
#F5CDD7
oklch(88.5% 0.047 1.3)
-
Step 300
300
#F0AABC
oklch(80.9% 0.085 2.3)
-
Step 400
400
#E57A9A
oklch(70.8% 0.136 2.1)
-
Step 500
500
#D95381
oklch(63.1% 0.172 2.1)
-
Step 600
600 (this color)
#CB3770
oklch(57.4% 0.189 1.9)
-
Step 700
700
#A92159
oklch(49.1% 0.175 1.9)
-
Step 800
800
#8A1E49
oklch(42.8% 0.146 1.9)
-
Step 900
900
#6F203D
oklch(37.7% 0.114 1.8)
-
Step 950
950
#411424
oklch(26.9% 0.072 1.1)
#CB3770 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) | #585F71 | 0.212 |
| Deuteranopia (no green cones) | #807C6D | 0.191 |
| Tritanopia (no blue cones) | #DC1E4F | 0.054 |
| Achromatopsia (no color) | #717171 | 0.190 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #CB3770
#CB3770
oklch(57.4% 0.189 1.9)
- #008C7D
#008C7D
oklch(57.4% 0.103 181.9)
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 #CB3770, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Pink #CB416B ΔE 0.020
- Deep Rose #C74767 ΔE 0.033
- Dark Hot Pink #D90166 ΔE 0.042
- Cerise #DE0C62 ΔE 0.045
- Lipstick #D5174E ΔE 0.051
- Dark Rose #B5485D ΔE 0.058
- Medium Violet Red #C71585 ΔE 0.059
- Ruby #CA0147 ΔE 0.062
Use #CB3770 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.