#051535
Closest named color: Rich Black (#0D1B2A). oklch(20.5% 0.067 261.5), rgb(5, 21, 53).
Aa
White text reads best on this color (18.02:1).
About this color
#051535 is a very dark, muted blue. In OKLCH its lightness is 20%, its chroma 0.067 and its hue 262°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Black (#0D1B2A), ΔE 0.035 away. White text reads best on it, at 18.02:1.
| Hue family | Blues |
| Lightness | very dark (20%) |
| Chroma | muted (0.067) |
| Temperature | cool |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.16:1 |
| White text | 18.02:1 |
Values
| HEX | #051535 |
| RGB | rgb(5, 21, 53) |
| HSL | hsl(220, 83%, 11%) |
| OKLCH | oklch(20.5% 0.067 261.5) |
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 #051535 | 18.02:1 | AAA | Lc -106.8 | Preferred for body text |
| Black text on #051535 | 1.16:1 | Fails | Lc 0.0 | Not readable |
| #051535 text on white | 18.02:1 | AAA | Lc 104.5 | Preferred for body text |
| #051535 text on black | 1.16:1 | 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
#F1F6FD
oklch(97.1% 0.011 256.7)
-
Step 100
100
#E1EAFA
oklch(93.5% 0.024 262.1)
-
Step 200
200
#C9DAF7
oklch(88.5% 0.044 261.2)
-
Step 300
300
#A4C1F5
oklch(80.8% 0.081 261.9)
-
Step 400
400
#74A0F0
oklch(70.8% 0.127 261.7)
-
Step 500
500
#4F86EA
oklch(63.1% 0.162 261.3)
-
Step 600
600
#336DD9
oklch(55.7% 0.177 261.4)
-
Step 700
700
#265ABC
oklch(49.1% 0.164 261.6)
-
Step 800
800
#214A98
oklch(42.7% 0.136 261.7)
-
Step 900
900
#203F79
oklch(37.8% 0.106 261.6)
-
Step 950
950 (this color)
#051535
oklch(20.5% 0.067 261.5)
#051535 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) | #031936 | 0.013 |
| Deuteranopia (no green cones) | #001434 | 0.009 |
| Tritanopia (no blue cones) | #001D22 | 0.053 |
| Achromatopsia (no color) | #161616 | 0.067 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #051535
#051535
oklch(20.5% 0.067 261.5)
- #211500
#211500
oklch(20.6% 0.042 81.7)
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 #051535, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.035
- Navy Blue #001146 ΔE 0.036
- Dark Navy #000435 ΔE 0.053
- Night Blue #040348 ΔE 0.055
- Rich Navy #001219 ΔE 0.059
- Very Dark Blue #000133 ΔE 0.065
- Dark Navy Blue #00022E ΔE 0.066
- Dark #1B2431 ΔE 0.066
Use #051535 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.