#C70603
Closest named color: Scarlet (#BE0119). oklch(52.3% 0.212 29.3), rgb(199, 6, 3).
Aa
White text reads best on this color (6.07:1).
About this color
#C70603 is a medium-dark, vivid red. In OKLCH its lightness is 52%, its chroma 0.212 and its hue 29°. Its hue sits on the warm side of the wheel. The nearest named color is Scarlet (#BE0119), ΔE 0.023 away. White text reads best on it, at 6.07:1.
| Hue family | Reds |
| Lightness | medium-dark (52%) |
| Chroma | vivid (0.212) |
| Temperature | warm |
| Nearest name | Scarlet (#BE0119) |
| Black text | 3.45:1 |
| White text | 6.07:1 |
Values
| HEX | #C70603 |
| RGB | rgb(199, 6, 3) |
| HSL | hsl(1, 97%, 40%) |
| OKLCH | oklch(52.3% 0.212 29.3) |
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 #C70603 | 6.07:1 | AA | Lc -83.0 | Fine for body text |
| Black text on #C70603 | 3.45:1 | AA large text | Lc 26.4 | Dividers and decoration only |
| #C70603 text on white | 6.07:1 | AA | Lc 77.7 | Fine for body text |
| #C70603 text on black | 3.45:1 | AA large text | Lc -24.1 | 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
#FFF2F0
oklch(97.1% 0.014 28)
-
Step 100
100
#FDE3DF
oklch(93.6% 0.029 28.1)
-
Step 200
200
#FDCCC4
oklch(88.6% 0.057 29)
-
Step 300
300
#FCA79A
oklch(80.9% 0.103 29)
-
Step 400
400
#F67362
oklch(70.8% 0.164 29.3)
-
Step 500
500
#EE4234
oklch(63.1% 0.211 29.1)
-
Step 600
600
#D90100
oklch(55.6% 0.228 29.3)
-
Step 700
700 (this color)
#C70603
oklch(52.3% 0.212 29.3)
-
Step 800
800
#980000
oklch(42.7% 0.175 29.2)
-
Step 900
900
#7A150E
oklch(37.7% 0.136 29.3)
-
Step 950
950
#480F0A
oklch(26.9% 0.087 29.1)
#C70603 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) | #544900 | 0.232 |
| Deuteranopia (no green cones) | #7F7000 | 0.206 |
| Tritanopia (no blue cones) | #DC000E | 0.044 |
| Achromatopsia (no color) | #626262 | 0.214 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #C70603
#C70603
oklch(52.3% 0.212 29.3)
- #007786
#007786
oklch(52.2% 0.09 210)
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 #C70603, closest first.
No curated palette has a color within ΔE 0.04 of #C70603.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Scarlet #BE0119 ΔE 0.023
- Lipstick Red #C0022F ΔE 0.034
- Cherry #CF0234 ΔE 0.038
- Firebrick #B22222 ΔE 0.042
- Rufous #AE2012 ΔE 0.049
- Rusty Red #AF2F0D ΔE 0.051
- Rose Red #BE013C ΔE 0.051
- Sinopia #BB3E03 ΔE 0.055
Use #C70603 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.