#C03927
Closest named color: Dull Red (#BB3F3F). oklch(54.3% 0.175 30.9), rgb(192, 57, 39).
Aa
White text reads best on this color (5.44:1).
About this color
#C03927 is a medium-dark, vivid red. In OKLCH its lightness is 54%, its chroma 0.175 and its hue 31°. Its hue sits on the warm side of the wheel. The nearest named color is Dull Red (#BB3F3F), ΔE 0.025 away. White text reads best on it, at 5.44:1.
| Hue family | Reds |
| Lightness | medium-dark (54%) |
| Chroma | vivid (0.175) |
| Temperature | warm |
| Nearest name | Dull Red (#BB3F3F) |
| Black text | 3.85:1 |
| White text | 5.44:1 |
Values
| HEX | #C03927 |
| RGB | rgb(192, 57, 39) |
| HSL | hsl(7, 66%, 45%) |
| OKLCH | oklch(54.3% 0.175 30.9) |
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 #C03927 | 5.44:1 | AA | Lc -81.3 | Fine for body text |
| Black text on #C03927 | 3.85:1 | AA large text | Lc 28.1 | Dividers and decoration only |
| #C03927 text on white | 5.44:1 | AA | Lc 76.0 | Fine for body text |
| #C03927 text on black | 3.85:1 | AA large text | Lc -25.8 | 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
#FCF3F1
oklch(97.1% 0.01 32.5)
-
Step 100
100
#F9E5E1
oklch(93.7% 0.023 31.1)
-
Step 200
200
#F5CFC8
oklch(88.5% 0.044 30.2)
-
Step 300
300
#EFAEA2
oklch(80.9% 0.079 30.6)
-
Step 400
400
#E48170
oklch(70.7% 0.125 30.8)
-
Step 500
500
#D95D49
oklch(63.1% 0.16 31.2)
-
Step 600
600 (this color)
#C03927
oklch(54.3% 0.175 30.9)
-
Step 700
700
#A92E1E
oklch(49% 0.162 30.8)
-
Step 800
800
#8A281B
oklch(42.8% 0.135 30.8)
-
Step 900
900
#6F271C
oklch(37.8% 0.105 31.1)
-
Step 950
950
#411811
oklch(27% 0.066 31.5)
#C03927 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) | #615724 | 0.184 |
| Deuteranopia (no green cones) | #827421 | 0.167 |
| Tritanopia (no blue cones) | #D40036 | 0.060 |
| Achromatopsia (no color) | #6A6A6A | 0.176 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #C03927
#C03927
oklch(54.3% 0.175 30.9)
- #007E8E
#007E8E
oklch(54.4% 0.094 210.2)
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 #C03927, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dull Red #BB3F3F ΔE 0.025
- Sinopia #BB3E03 ΔE 0.026
- Brick Orange #C14A09 ΔE 0.040
- Dusty Red #B9484E ΔE 0.043
- Rusty Red #AF2F0D ΔE 0.044
- Firebrick #B22222 ΔE 0.048
- Burnt Orange #C04E01 ΔE 0.048
- Scarlet #BE0119 ΔE 0.051
Use #C03927 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.