#011E3B
Closest named color: Rich Black (#0D1B2A). oklch(23.2% 0.066 251.2), rgb(1, 30, 59).
Aa
White text reads best on this color (16.79:1).
About this color
#011E3B is a very dark, muted blue. In OKLCH its lightness is 23%, its chroma 0.066 and its hue 251°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Black (#0D1B2A), ΔE 0.034 away. White text reads best on it, at 16.79:1.
| Hue family | Blues |
| Lightness | very dark (23%) |
| Chroma | muted (0.066) |
| Temperature | cool |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.25:1 |
| White text | 16.79:1 |
Values
| HEX | #011E3B |
| RGB | rgb(1, 30, 59) |
| HSL | hsl(210, 97%, 12%) |
| OKLCH | oklch(23.2% 0.066 251.2) |
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 #011E3B | 16.79:1 | AAA | Lc -105.9 | Preferred for body text |
| Black text on #011E3B | 1.25:1 | Fails | Lc 0.0 | Not readable |
| #011E3B text on white | 16.79:1 | AAA | Lc 103.4 | Preferred for body text |
| #011E3B text on black | 1.25:1 | 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
#F0F6FC
oklch(97% 0.01 247.9)
-
Step 100
100
#DFEBF9
oklch(93.5% 0.023 252.2)
-
Step 200
200
#C5DCF6
oklch(88.6% 0.044 251.5)
-
Step 300
300
#9CC5F2
oklch(81% 0.078 251.1)
-
Step 400
400
#62A5EC
oklch(70.7% 0.125 251.3)
-
Step 500
500
#2E8CE6
oklch(63.1% 0.16 251.3)
-
Step 600
600
#0075CE
oklch(55.7% 0.162 251.1)
-
Step 700
700
#0062AE
oklch(49.1% 0.143 251.1)
-
Step 800
800
#005090
oklch(42.7% 0.125 251.1)
-
Step 900
900
#084376
oklch(37.8% 0.103 250.9)
-
Step 950
950 (this color)
#011E3B
oklch(23.2% 0.066 251.2)
#011E3B 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) | #0F203C | 0.018 |
| Deuteranopia (no green cones) | #041B3A | 0.010 |
| Tritanopia (no blue cones) | #002529 | 0.048 |
| Achromatopsia (no color) | #1D1D1D | 0.066 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #011E3B
#011E3B
oklch(23.2% 0.066 251.2)
- #2C1900
#2C1900
oklch(23.3% 0.05 71.7)
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 #011E3B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.034
- Oxford Blue #1B263B ΔE 0.045
- Navy Blue #001146 ΔE 0.046
- Dark #1B2431 ΔE 0.046
- Jet #212529 ΔE 0.064
- Night Blue #040348 ΔE 0.073
- Rich Navy #001219 ΔE 0.076
- Dark Indigo #1F0954 ΔE 0.078
Use #011E3B 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.