#621803
Closest named color: Reddy Brown (#6E1005). oklch(33.2% 0.11 35.7), rgb(98, 24, 3).
Aa
White text reads best on this color (12.71:1).
About this color
#621803 is a dark, moderately saturated red. In OKLCH its lightness is 33%, its chroma 0.110 and its hue 36°. Its hue sits on the warm side of the wheel. The nearest named color is Reddy Brown (#6E1005), ΔE 0.027 away. White text reads best on it, at 12.71:1.
| Hue family | Reds |
| Lightness | dark (33%) |
| Chroma | moderately saturated (0.110) |
| Temperature | warm |
| Nearest name | Reddy Brown (#6E1005) |
| Black text | 1.65:1 |
| White text | 12.71:1 |
Values
| HEX | #621803 |
| RGB | rgb(98, 24, 3) |
| HSL | hsl(13, 94%, 20%) |
| OKLCH | oklch(33.2% 0.11 35.7) |
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 #621803 | 12.71:1 | AAA | Lc -101.2 | Preferred for body text |
| Black text on #621803 | 1.65:1 | Fails | Lc 0.0 | Not readable |
| #621803 text on white | 12.71:1 | AAA | Lc 97.7 | Preferred for body text |
| #621803 text on black | 1.65:1 | 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
#FDF3F0
oklch(97.1% 0.012 37.4)
-
Step 100
100
#F9E5DF
oklch(93.6% 0.023 37.4)
-
Step 200
200
#F6CFC5
oklch(88.5% 0.046 34.7)
-
Step 300
300
#F1AE9C
oklch(80.9% 0.083 35.6)
-
Step 400
400
#E68065
oklch(70.6% 0.132 35.8)
-
Step 500
500
#DC5B39
oklch(63.1% 0.169 35.7)
-
Step 600
600
#C73B0F
oklch(55.5% 0.183 35.8)
-
Step 700
700
#AB2C00
oklch(49% 0.169 35.7)
-
Step 800
800
#8B2607
oklch(42.6% 0.141 35.6)
-
Step 900
900 (this color)
#621803
oklch(33.2% 0.11 35.7)
-
Step 950
950
#42170C
oklch(27% 0.07 35.4)
#621803 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) | #2F2800 | 0.113 |
| Deuteranopia (no green cones) | #413900 | 0.103 |
| Tritanopia (no blue cones) | #6D0014 | 0.040 |
| Achromatopsia (no color) | #333333 | 0.111 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #621803
#621803
oklch(33.2% 0.11 35.7)
- #003D49
#003D49
oklch(33.2% 0.059 216)
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 #621803, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Reddy Brown #6E1005 ΔE 0.027
- Claret #680018 ΔE 0.042
- Blood #770001 ΔE 0.047
- Chestnut #742802 ΔE 0.056
- Burgundy #610023 ΔE 0.058
- Maroon #800000 ΔE 0.065
- Wine Red #7B0323 ΔE 0.068
- Mahogany #4A0100 ΔE 0.075
Use #621803 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.