#C03B44
Closest named color: Dull Red (#BB3F3F). oklch(54.9% 0.169 21), rgb(192, 59, 68).
Aa
White text reads best on this color (5.31:1).
About this color
#C03B44 is a medium-dark, vivid red. In OKLCH its lightness is 55%, its chroma 0.169 and its hue 21°. Its hue sits on the warm side of the wheel. The nearest named color is Dull Red (#BB3F3F), ΔE 0.013 away. White text reads best on it, at 5.31:1.
| Hue family | Reds |
| Lightness | medium-dark (55%) |
| Chroma | vivid (0.169) |
| Temperature | warm |
| Nearest name | Dull Red (#BB3F3F) |
| Black text | 3.95:1 |
| White text | 5.31:1 |
Values
| HEX | #C03B44 |
| RGB | rgb(192, 59, 68) |
| HSL | hsl(356, 53%, 49%) |
| OKLCH | oklch(54.9% 0.169 21) |
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 #C03B44 | 5.31:1 | AA | Lc -80.7 | Fine for body text |
| Black text on #C03B44 | 3.95:1 | AA large text | Lc 28.7 | Dividers and decoration only |
| #C03B44 text on white | 5.31:1 | AA | Lc 75.4 | Fine for body text |
| #C03B44 text on black | 3.95:1 | AA large text | Lc -26.4 | 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
#FCF3F2
oklch(97.1% 0.01 25.1)
-
Step 100
100
#F8E4E3
oklch(93.5% 0.022 21)
-
Step 200
200
#F4CFCD
oklch(88.5% 0.042 21.6)
-
Step 300
300
#EEAEAB
oklch(81% 0.076 21.9)
-
Step 400
400
#E2807F
oklch(70.6% 0.121 21.2)
-
Step 500
500
#D75C5F
oklch(63.1% 0.155 21.2)
-
Step 600
600 (this color)
#C03B44
oklch(54.9% 0.169 21)
-
Step 700
700
#A72E37
oklch(49% 0.157 21.2)
-
Step 800
800
#88282E
oklch(42.7% 0.13 21.2)
-
Step 900
900
#6D2629
oklch(37.6% 0.101 20.9)
-
Step 950
950
#401718
oklch(26.8% 0.064 21)
#C03B44 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) | #5F5943 | 0.184 |
| Deuteranopia (no green cones) | #817640 | 0.169 |
| Tritanopia (no blue cones) | #D3163F | 0.046 |
| Achromatopsia (no color) | #6B6B6B | 0.170 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #C03B44
#C03B44
oklch(54.9% 0.169 21)
- #008188
#008188
oklch(54.9% 0.093 201.5)
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 #C03B44, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dull Red #BB3F3F ΔE 0.013
- Dusty Red #B9484E ΔE 0.024
- Dark Rose #B5485D ΔE 0.038
- Cherry #CF0234 ΔE 0.048
- Deep Rose #C74767 ΔE 0.049
- Faded Red #D3494E ΔE 0.049
- Lipstick Red #C0022F ΔE 0.052
- Ruby #CA0147 ΔE 0.053
Use #C03B44 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.