#150403
Closest named color: Very Dark Brown (#1D0200). oklch(14% 0.035 28), rgb(21, 4, 3).
Aa
White text reads best on this color (19.98:1).
About this color
#150403 is a very dark, muted red. In OKLCH its lightness is 14%, its chroma 0.035 and its hue 28°. Its hue sits on the warm side of the wheel. The nearest named color is Very Dark Brown (#1D0200), ΔE 0.023 away. White text reads best on it, at 19.98:1.
| Hue family | Reds |
| Lightness | very dark (14%) |
| Chroma | muted (0.035) |
| Temperature | warm |
| Nearest name | Very Dark Brown (#1D0200) |
| Black text | 1.05:1 |
| White text | 19.98:1 |
Values
| HEX | #150403 |
| RGB | rgb(21, 4, 3) |
| HSL | hsl(3, 75%, 5%) |
| OKLCH | oklch(14% 0.035 28) |
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 #150403 | 19.98:1 | AAA | Lc -107.7 | Preferred for body text |
| Black text on #150403 | 1.05:1 | Fails | Lc 0.0 | Not readable |
| #150403 text on white | 19.98:1 | AAA | Lc 105.8 | Preferred for body text |
| #150403 text on black | 1.05:1 | 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 950.
-
Step 50
50
#F9F4F3
oklch(97.1% 0.006 31.1)
-
Step 100
100
#F2E7E5
oklch(93.6% 0.012 29.9)
-
Step 200
200
#E8D4D1
oklch(88.5% 0.023 27.8)
-
Step 300
300
#DAB7B2
oklch(80.9% 0.041 27.6)
-
Step 400
400
#C6918A
oklch(70.6% 0.066 27.3)
-
Step 500
500
#B7766D
oklch(63.2% 0.084 28.2)
-
Step 600
600
#A25E55
oklch(55.7% 0.091 28.3)
-
Step 700
700
#8B4D45
oklch(49.2% 0.085 28.3)
-
Step 800
800
#713F39
oklch(42.7% 0.071 27.7)
-
Step 900
900
#5B3631
oklch(37.7% 0.054 28.2)
-
Step 950
950 (this color)
#150403
oklch(14% 0.035 28)
#150403 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) | #070603 | 0.037 |
| Deuteranopia (no green cones) | #0C0A03 | 0.033 |
| Tritanopia (no blue cones) | #180204 | 0.013 |
| Achromatopsia (no color) | #080808 | 0.035 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #150403
#150403
oklch(14% 0.035 28)
- #000C0E
#000C0E
oklch(14.1% 0.024 205.3)
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 #150403, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Very Dark Brown #1D0200 ΔE 0.023
- Almost Black #070D0D ΔE 0.046
- Rich Navy #001219 ΔE 0.072
- Rich Black #0D1B2A ΔE 0.101
- Dark Maroon #3C0008 ΔE 0.102
- Midnight #03012D ΔE 0.108
- Dark Navy Blue #00022E ΔE 0.113
- Deep Brown #410200 ΔE 0.115
Use #150403 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.