#C00504
Closest named color: Scarlet (#BE0119). oklch(50.9% 0.207 29.1), rgb(192, 5, 4).
Aa
White text reads best on this color (6.43:1).
About this color
#C00504 is a medium-dark, vivid red. In OKLCH its lightness is 51%, its chroma 0.207 and its hue 29°. Its hue sits on the warm side of the wheel. The nearest named color is Scarlet (#BE0119), ΔE 0.012 away. White text reads best on it, at 6.43:1.
| Hue family | Reds |
| Lightness | medium-dark (51%) |
| Chroma | vivid (0.207) |
| Temperature | warm |
| Nearest name | Scarlet (#BE0119) |
| Black text | 3.26:1 |
| White text | 6.43:1 |
Values
| HEX | #C00504 |
| RGB | rgb(192, 5, 4) |
| HSL | hsl(0, 96%, 38%) |
| OKLCH | oklch(50.9% 0.207 29.1) |
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 #C00504 | 6.43:1 | AA | Lc -84.5 | Fine for body text |
| Black text on #C00504 | 3.26:1 | AA large text | Lc 24.8 | Dividers and decoration only |
| #C00504 text on white | 6.43:1 | AA | Lc 79.3 | Fine for body text |
| #C00504 text on black | 3.26:1 | AA large text | Lc -22.5 | 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 700.
-
Step 50
50
#FEF2F0
oklch(97% 0.013 28.9)
-
Step 100
100
#FDE3DF
oklch(93.6% 0.029 28.1)
-
Step 200
200
#FCCCC4
oklch(88.5% 0.056 29.2)
-
Step 300
300
#FBA89B
oklch(80.9% 0.101 29.2)
-
Step 400
400
#F47464
oklch(70.7% 0.16 29)
-
Step 500
500
#EB4637
oklch(63.1% 0.204 29.2)
-
Step 600
600
#D7100B
oklch(55.6% 0.222 29.1)
-
Step 700
700 (this color)
#C00504
oklch(50.9% 0.207 29.1)
-
Step 800
800
#970705
oklch(42.8% 0.171 29)
-
Step 900
900
#791710
oklch(37.7% 0.134 29.2)
-
Step 950
950
#47100B
oklch(26.9% 0.085 29.1)
#C00504 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) | #514600 | 0.226 |
| Deuteranopia (no green cones) | #7A6C00 | 0.201 |
| Tritanopia (no blue cones) | #D4000D | 0.042 |
| Achromatopsia (no color) | #5F5F5F | 0.208 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #C00504
#C00504
oklch(50.9% 0.207 29.1)
- #007381
#007381
oklch(50.9% 0.088 209.5)
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 #C00504, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Scarlet #BE0119 ΔE 0.012
- Firebrick #B22222 ΔE 0.030
- Lipstick Red #C0022F ΔE 0.031
- Rufous #AE2012 ΔE 0.036
- Rusty Red #AF2F0D ΔE 0.042
- Rust Red #AA2704 ΔE 0.046
- Cherry #CF0234 ΔE 0.047
- Rose Red #BE013C ΔE 0.047
Use #C00504 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.