#011C38
Closest named color: Rich Black (#0D1B2A). oklch(22.4% 0.064 251.5), rgb(1, 28, 56).
Aa
White text reads best on this color (17.14:1).
About this color
#011C38 is a very dark, muted blue. In OKLCH its lightness is 22%, its chroma 0.064 and its hue 252°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Black (#0D1B2A), ΔE 0.029 away. White text reads best on it, at 17.14:1.
| Hue family | Blues |
| Lightness | very dark (22%) |
| Chroma | muted (0.064) |
| Temperature | cool |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.22:1 |
| White text | 17.14:1 |
Values
| HEX | #011C38 |
| RGB | rgb(1, 28, 56) |
| HSL | hsl(211, 96%, 11%) |
| OKLCH | oklch(22.4% 0.064 251.5) |
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 #011C38 | 17.14:1 | AAA | Lc -106.2 | Preferred for body text |
| Black text on #011C38 | 1.22:1 | Fails | Lc 0.0 | Not readable |
| #011C38 text on white | 17.14:1 | AAA | Lc 103.8 | Preferred for body text |
| #011C38 text on black | 1.22:1 | 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
#F1F6FC
oklch(97.1% 0.01 252.8)
-
Step 100
100
#E0EBF8
oklch(93.6% 0.021 252.5)
-
Step 200
200
#C6DCF5
oklch(88.6% 0.042 251.7)
-
Step 300
300
#9DC5F1
oklch(81% 0.076 251.2)
-
Step 400
400
#65A5EA
oklch(70.8% 0.121 251.5)
-
Step 500
500
#348CE3
oklch(63% 0.155 251.5)
-
Step 600
600
#0074CF
oklch(55.5% 0.165 251.7)
-
Step 700
700
#0062AF
oklch(49.2% 0.144 251.3)
-
Step 800
800
#005091
oklch(42.8% 0.126 251.5)
-
Step 900
900
#0D4375
oklch(37.8% 0.101 251.4)
-
Step 950
950 (this color)
#011C38
oklch(22.4% 0.064 251.5)
#011C38 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) | #0D1E39 | 0.017 |
| Deuteranopia (no green cones) | #041937 | 0.010 |
| Tritanopia (no blue cones) | #002327 | 0.047 |
| Achromatopsia (no color) | #1B1B1B | 0.064 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #011C38
#011C38
oklch(22.4% 0.064 251.5)
- #291700
#291700
oklch(22.4% 0.048 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 #011C38, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.029
- Navy Blue #001146 ΔE 0.044
- Dark #1B2431 ΔE 0.050
- Oxford Blue #1B263B ΔE 0.051
- Jet #212529 ΔE 0.066
- Rich Navy #001219 ΔE 0.068
- Night Blue #040348 ΔE 0.070
- Dark Navy #000435 ΔE 0.074
Use #011C38 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.