#CD2507
Closest named color: Sinopia (#BB3E03). oklch(54.7% 0.205 31.7), rgb(205, 37, 7).
Aa
White text reads best on this color (5.43:1).
About this color
#CD2507 is a medium-dark, vivid red. In OKLCH its lightness is 55%, its chroma 0.205 and its hue 32°. Its hue sits on the warm side of the wheel. The nearest named color is Sinopia (#BB3E03), ΔE 0.043 away. White text reads best on it, at 5.43:1.
| Hue family | Reds |
| Lightness | medium-dark (55%) |
| Chroma | vivid (0.205) |
| Temperature | warm |
| Nearest name | Sinopia (#BB3E03) |
| Black text | 3.86:1 |
| White text | 5.43:1 |
Values
| HEX | #CD2507 |
| RGB | rgb(205, 37, 7) |
| HSL | hsl(9, 93%, 42%) |
| OKLCH | oklch(54.7% 0.205 31.7) |
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 #CD2507 | 5.43:1 | AA | Lc -80.6 | Fine for body text |
| Black text on #CD2507 | 3.86:1 | AA large text | Lc 28.9 | Dividers and decoration only |
| #CD2507 text on white | 5.43:1 | AA | Lc 75.2 | Fine for body text |
| #CD2507 text on black | 3.86:1 | AA large text | Lc -26.5 | 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 600.
-
Step 50
50
#FEF3F0
oklch(97.2% 0.013 35.7)
-
Step 100
100
#FBE4DF
oklch(93.6% 0.026 32.2)
-
Step 200
200
#F9CDC4
oklch(88.4% 0.052 31.6)
-
Step 300
300
#F6AB9C
oklch(80.9% 0.092 31.7)
-
Step 400
400
#EE7A65
oklch(70.8% 0.147 31.6)
-
Step 500
500
#E55038
oklch(63.1% 0.189 31.7)
-
Step 600
600 (this color)
#CD2507
oklch(54.7% 0.205 31.7)
-
Step 700
700
#B31B00
oklch(49.2% 0.188 31.7)
-
Step 800
800
#921906
oklch(42.7% 0.158 31.6)
-
Step 900
900
#751E11
oklch(37.6% 0.123 31.5)
-
Step 950
950
#45140C
oklch(27% 0.077 31.7)
#CD2507 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) | #5E5200 | 0.220 |
| Deuteranopia (no green cones) | #867700 | 0.197 |
| Tritanopia (no blue cones) | #E30022 | 0.047 |
| Achromatopsia (no color) | #6A6A6A | 0.206 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #CD2507
#CD2507
oklch(54.7% 0.205 31.7)
- #007F91
#007F91
oklch(54.7% 0.095 211.9)
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 #CD2507, closest first.
No curated palette has a color within ΔE 0.04 of #CD2507.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sinopia #BB3E03 ΔE 0.043
- Cherry #CF0234 ΔE 0.044
- Scarlet #BE0119 ΔE 0.047
- Dull Red #BB3F3F ΔE 0.051
- Crimson #DC143C ΔE 0.052
- Lipstick Red #C0022F ΔE 0.054
- Brick Orange #C14A09 ΔE 0.054
- Firebrick #B22222 ΔE 0.059
Use #CD2507 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.