#640823
Closest named color: Burgundy (#610023). oklch(32.7% 0.122 12.2), rgb(100, 8, 35).
Aa
White text reads best on this color (13.11:1).
About this color
#640823 is a dark, moderately saturated red. In OKLCH its lightness is 33%, its chroma 0.122 and its hue 12°. Its hue sits on the warm side of the wheel. The nearest named color is Burgundy (#610023), ΔE 0.013 away. White text reads best on it, at 13.11:1.
| Hue family | Reds |
| Lightness | dark (33%) |
| Chroma | moderately saturated (0.122) |
| Temperature | warm |
| Nearest name | Burgundy (#610023) |
| Black text | 1.60:1 |
| White text | 13.11:1 |
Values
| HEX | #640823 |
| RGB | rgb(100, 8, 35) |
| HSL | hsl(342, 85%, 21%) |
| OKLCH | oklch(32.7% 0.122 12.2) |
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 #640823 | 13.11:1 | AAA | Lc -101.4 | Preferred for body text |
| Black text on #640823 | 1.60:1 | Fails | Lc 0.0 | Not readable |
| #640823 text on white | 13.11:1 | AAA | Lc 97.9 | Preferred for body text |
| #640823 text on black | 1.60:1 | Fails | Lc 0.0 | Not readable |
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 900.
-
Step 50
50
#FEF2F3
oklch(97.1% 0.013 11.5)
-
Step 100
100
#FBE3E5
oklch(93.6% 0.026 11.9)
-
Step 200
200
#F9CCD0
oklch(88.5% 0.051 12.1)
-
Step 300
300
#F6A8B1
oklch(80.9% 0.093 11.7)
-
Step 400
400
#ED7688
oklch(70.8% 0.147 12.1)
-
Step 500
500
#E34B6A
oklch(63.1% 0.188 12.3)
-
Step 600
600
#CE2252
oklch(55.6% 0.204 12.3)
-
Step 700
700
#B20E43
oklch(49.1% 0.19 12.1)
-
Step 800
800
#901437
oklch(42.6% 0.157 12.2)
-
Step 900
900 (this color)
#640823
oklch(32.7% 0.122 12.2)
-
Step 950
950
#44121C
oklch(26.9% 0.077 12)
#640823 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) | #252523 | 0.138 |
| Deuteranopia (no green cones) | #3C3721 | 0.125 |
| Tritanopia (no blue cones) | #6E0015 | 0.029 |
| Achromatopsia (no color) | #303030 | 0.124 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #640823
#640823
oklch(32.7% 0.122 12.2)
- #003D3C
#003D3C
oklch(32.6% 0.056 192.9)
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 #640823, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Burgundy #610023 ΔE 0.013
- Claret #680018 ΔE 0.017
- Reddy Brown #6E1005 ΔE 0.047
- Merlot #730039 ΔE 0.049
- Wine Red #7B0323 ΔE 0.052
- Bordeaux #7B002C ΔE 0.053
- Blood #770001 ΔE 0.055
- Maroon #800000 ΔE 0.072
Use #640823 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.