#C64539
Closest named color: Dull Red (#BB3F3F). oklch(56.9% 0.167 28.7), rgb(198, 69, 57).
Aa
White text reads best on this color (4.87:1).
About this color
#C64539 is a medium-dark, vivid red. In OKLCH its lightness is 57%, its chroma 0.167 and its hue 29°. Its hue sits on the warm side of the wheel. The nearest named color is Dull Red (#BB3F3F), ΔE 0.028 away. White text reads best on it, at 4.87:1.
| Hue family | Reds |
| Lightness | medium-dark (57%) |
| Chroma | vivid (0.167) |
| Temperature | warm |
| Nearest name | Dull Red (#BB3F3F) |
| Black text | 4.31:1 |
| White text | 4.87:1 |
Values
| HEX | #C64539 |
| RGB | rgb(198, 69, 57) |
| HSL | hsl(5, 55%, 50%) |
| OKLCH | oklch(56.9% 0.167 28.7) |
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 #C64539 | 4.87:1 | AA | Lc -78.2 | Fine for body text |
| Black text on #C64539 | 4.31:1 | AA large text | Lc 31.3 | Non-text elements, placeholder text |
| #C64539 text on white | 4.87:1 | AA | Lc 72.8 | Content text, not long reading |
| #C64539 text on black | 4.31:1 | AA large text | Lc -28.9 | 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
#F8E5E2
oklch(93.6% 0.021 28.3)
-
Step 200
200
#F4CFCA
oklch(88.5% 0.042 27)
-
Step 300
300
#EDAFA5
oklch(80.9% 0.075 29.1)
-
Step 400
400
#E18275
oklch(70.6% 0.12 28.7)
-
Step 500
500
#D65F51
oklch(63.1% 0.153 28.9)
-
Step 600
600 (this color)
#C64539
oklch(56.9% 0.167 28.7)
-
Step 700
700
#A73128
oklch(49.1% 0.156 28.5)
-
Step 800
800
#872B22
oklch(42.7% 0.127 29)
-
Step 900
900
#6D2821
oklch(37.7% 0.1 28.5)
-
Step 950
950
#401814
oklch(26.9% 0.063 27.8)
#C64539 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) | #695F37 | 0.175 |
| Deuteranopia (no green cones) | #897C35 | 0.162 |
| Tritanopia (no blue cones) | #D92343 | 0.056 |
| Achromatopsia (no color) | #717171 | 0.168 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #C64539
#C64539
oklch(56.9% 0.167 28.7)
- #008696
#008696
oklch(56.8% 0.098 209.4)
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 #C64539, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dull Red #BB3F3F ΔE 0.028
- Dusty Red #B9484E ΔE 0.034
- Faded Red #D3494E ΔE 0.036
- Dark Coral #CF524E ΔE 0.036
- Brick Orange #C14A09 ΔE 0.039
- Sinopia #BB3E03 ΔE 0.044
- Burnt Orange #C04E01 ΔE 0.046
- Pale Red #D9544D ΔE 0.052
Use #C64539 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.