#150103
Closest named color: Very Dark Brown (#1D0200). oklch(12.9% 0.045 15.4), rgb(21, 1, 3).
Aa
White text reads best on this color (20.24:1).
About this color
#150103 is a very dark, muted red. In OKLCH its lightness is 13%, its chroma 0.045 and its hue 15°. Its hue sits on the warm side of the wheel. The nearest named color is Very Dark Brown (#1D0200), ΔE 0.029 away. White text reads best on it, at 20.24:1.
| Hue family | Reds |
| Lightness | very dark (13%) |
| Chroma | muted (0.045) |
| Temperature | warm |
| Nearest name | Very Dark Brown (#1D0200) |
| Black text | 1.03:1 |
| White text | 20.24:1 |
Values
| HEX | #150103 |
| RGB | rgb(21, 1, 3) |
| HSL | hsl(354, 91%, 4%) |
| OKLCH | oklch(12.9% 0.045 15.4) |
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 #150103 | 20.24:1 | AAA | Lc -107.7 | Preferred for body text |
| Black text on #150103 | 1.03:1 | Fails | Lc 0.0 | Not readable |
| #150103 text on white | 20.24:1 | AAA | Lc 105.8 | Preferred for body text |
| #150103 text on black | 1.03:1 | 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
#FAF4F4
oklch(97.2% 0.006 17.3)
-
Step 100
100
#F4E6E6
oklch(93.6% 0.015 17.4)
-
Step 200
200
#ECD2D3
oklch(88.6% 0.029 15.1)
-
Step 300
300
#E1B3B5
oklch(80.8% 0.054 15.4)
-
Step 400
400
#D08B8F
oklch(70.7% 0.085 15.6)
-
Step 500
500
#C26C74
oklch(63% 0.109 14.8)
-
Step 600
600
#AD535C
oklch(55.6% 0.118 15.5)
-
Step 700
700
#95434C
oklch(49.2% 0.11 15.3)
-
Step 800
800
#79373E
oklch(42.6% 0.092 15.2)
-
Step 900
900
#623035
oklch(37.7% 0.072 14.9)
-
Step 950
950 (this color)
#150103
oklch(12.9% 0.045 15.4)
#150103 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) | #040403 | 0.051 |
| Deuteranopia (no green cones) | #090803 | 0.047 |
| Tritanopia (no blue cones) | #180002 | 0.009 |
| Achromatopsia (no color) | #060606 | 0.046 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #150103
#150103
oklch(12.9% 0.045 15.4)
- #000A0A
#000A0A
oklch(13.1% 0.022 194.8)
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 #150103, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Very Dark Brown #1D0200 ΔE 0.029
- Almost Black #070D0D ΔE 0.060
- Rich Navy #001219 ΔE 0.084
- Dark Maroon #3C0008 ΔE 0.106
- Midnight #03012D ΔE 0.109
- Rich Black #0D1B2A ΔE 0.114
- Dark Navy Blue #00022E ΔE 0.115
- Very Dark Purple #2A0134 ΔE 0.116
Use #150103 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.