#052133
Closest named color: Rich Black (#0D1B2A). oklch(23.7% 0.048 240.9), rgb(5, 33, 51).
Aa
White text reads best on this color (16.51:1).
About this color
#052133 is a very dark, muted blue. In OKLCH its lightness is 24%, its chroma 0.048 and its hue 241°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Black (#0D1B2A), ΔE 0.024 away. White text reads best on it, at 16.51:1.
| Hue family | Blues |
| Lightness | very dark (24%) |
| Chroma | muted (0.048) |
| Temperature | cool |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.27:1 |
| White text | 16.51:1 |
Values
| HEX | #052133 |
| RGB | rgb(5, 33, 51) |
| HSL | hsl(203, 82%, 11%) |
| OKLCH | oklch(23.7% 0.048 240.9) |
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 #052133 | 16.51:1 | AAA | Lc -105.8 | Preferred for body text |
| Black text on #052133 | 1.27:1 | Fails | Lc 0.0 | Not readable |
| #052133 text on white | 16.51:1 | AAA | Lc 103.3 | Preferred for body text |
| #052133 text on black | 1.27:1 | 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
#F1F6FA
oklch(97.1% 0.008 241.7)
-
Step 100
100
#E1ECF4
oklch(93.7% 0.016 239.1)
-
Step 200
200
#C7DCEC
oklch(88.4% 0.032 240.7)
-
Step 300
300
#A0C6E2
oklch(80.8% 0.057 240.3)
-
Step 400
400
#6AA8D4
oklch(70.7% 0.091 240.7)
-
Step 500
500
#3D91C9
oklch(63% 0.117 241.4)
-
Step 600
600
#0B7BB6
oklch(55.7% 0.127 240.8)
-
Step 700
700
#00679B
oklch(49.1% 0.115 241)
-
Step 800
800
#05547F
oklch(42.7% 0.098 241.3)
-
Step 900
900
#134666
oklch(37.7% 0.076 241)
-
Step 950
950 (this color)
#052133
oklch(23.7% 0.048 240.9)
#052133 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) | #192134 | 0.025 |
| Deuteranopia (no green cones) | #121D33 | 0.019 |
| Tritanopia (no blue cones) | #002527 | 0.032 |
| Achromatopsia (no color) | #1F1F1F | 0.048 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #052133
#052133
oklch(23.7% 0.048 240.9)
- #2F1904
#2F1904
oklch(23.9% 0.048 61.8)
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 #052133, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.024
- Dark #1B2431 ΔE 0.031
- Oxford Blue #1B263B ΔE 0.037
- Jet #212529 ΔE 0.046
- Navy Blue #001146 ΔE 0.066
- Rich Navy #001219 ΔE 0.071
- Space Cadet #2B2D42 ΔE 0.074
- Gunmetal #293241 ΔE 0.081
Use #052133 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.