#780003
Closest named color: Blood (#770001). oklch(36% 0.147 28.4), rgb(120, 0, 3).
Aa
White text reads best on this color (11.66:1).
About this color
#780003 is a dark, vivid red. In OKLCH its lightness is 36%, its chroma 0.147 and its hue 28°. Its hue sits on the warm side of the wheel. The nearest named color is Blood (#770001), ΔE 0.003 away. White text reads best on it, at 11.66:1.
| Hue family | Reds |
| Lightness | dark (36%) |
| Chroma | vivid (0.147) |
| Temperature | warm |
| Nearest name | Blood (#770001) |
| Black text | 1.79:1 |
| White text | 11.66:1 |
Values
| HEX | #780003 |
| RGB | rgb(120, 0, 3) |
| HSL | hsl(358, 100%, 24%) |
| OKLCH | oklch(36% 0.147 28.4) |
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 #780003 | 11.66:1 | AAA | Lc -98.4 | Preferred for body text |
| Black text on #780003 | 1.79:1 | Fails | Lc 9.4 | Not readable |
| #780003 text on white | 11.66:1 | AAA | Lc 94.5 | Preferred for body text |
| #780003 text on black | 1.79:1 | Fails | Lc -8.1 | 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
#FFF2F0
oklch(97.1% 0.014 28)
-
Step 100
100
#FFE2DE
oklch(93.5% 0.033 27.1)
-
Step 200
200
#FFCBC3
oklch(88.6% 0.06 28.4)
-
Step 300
300
#FFA599
oklch(80.8% 0.109 28)
-
Step 400
400
#FB6D5E
oklch(70.6% 0.177 28.4)
-
Step 500
500
#F4362D
oklch(63.1% 0.226 28.4)
-
Step 600
600
#D9000B
oklch(55.6% 0.228 28.4)
-
Step 700
700
#B80008
oklch(49.2% 0.201 28.3)
-
Step 800
800
#980005
oklch(42.7% 0.175 28.4)
-
Step 900
900 (this color)
#780003
oklch(36% 0.147 28.4)
-
Step 950
950
#4A0C08
oklch(27% 0.093 28.8)
#780003 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) | #2F2801 | 0.162 |
| Deuteranopia (no green cones) | #4A4100 | 0.144 |
| Tritanopia (no blue cones) | #850004 | 0.030 |
| Achromatopsia (no color) | #383838 | 0.148 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #780003
#780003
oklch(36% 0.147 28.4)
- #00464E
#00464E
oklch(36% 0.062 207.7)
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 #780003, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blood #770001 ΔE 0.003
- Maroon #800000 ΔE 0.019
- Reddy Brown #6E1005 ΔE 0.023
- Wine Red #7B0323 ΔE 0.032
- Claret #680018 ΔE 0.043
- Dark Red #8B0000 ΔE 0.043
- Bordeaux #7B002C ΔE 0.046
- Chestnut #742802 ΔE 0.051
Use #780003 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.