#03203D
Closest named color: Rich Black (#0D1B2A). oklch(24.1% 0.065 251.6), rgb(3, 32, 61).
Aa
White text reads best on this color (16.43:1).
About this color
#03203D is a very dark, muted blue. In OKLCH its lightness is 24%, its chroma 0.065 and its hue 252°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Black (#0D1B2A), ΔE 0.038 away. White text reads best on it, at 16.43:1.
| Hue family | Blues |
| Lightness | very dark (24%) |
| Chroma | muted (0.065) |
| Temperature | cool |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.27:1 |
| White text | 16.43:1 |
Values
| HEX | #03203D |
| RGB | rgb(3, 32, 61) |
| HSL | hsl(210, 91%, 13%) |
| OKLCH | oklch(24.1% 0.065 251.6) |
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 #03203D | 16.43:1 | AAA | Lc -105.7 | Preferred for body text |
| Black text on #03203D | 1.27:1 | Fails | Lc 0.0 | Not readable |
| #03203D text on white | 16.43:1 | AAA | Lc 103.1 | Preferred for body text |
| #03203D 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
#F1F6FC
oklch(97.1% 0.01 252.8)
-
Step 100
100
#DFEBF9
oklch(93.5% 0.023 252.2)
-
Step 200
200
#C5DCF5
oklch(88.5% 0.042 250.5)
-
Step 300
300
#9CC5F2
oklch(81% 0.078 251.1)
-
Step 400
400
#63A5EB
oklch(70.7% 0.123 251.2)
-
Step 500
500
#318CE5
oklch(63.1% 0.158 251.6)
-
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
#0A4376
oklch(37.8% 0.103 251.2)
-
Step 950
950 (this color)
#03203D
oklch(24.1% 0.065 251.6)
#03203D 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) | #11223E | 0.017 |
| Deuteranopia (no green cones) | #071D3C | 0.010 |
| Tritanopia (no blue cones) | #00272B | 0.048 |
| Achromatopsia (no color) | #1F1F1F | 0.065 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #03203D
#03203D
oklch(24.1% 0.065 251.6)
- #2E1B00
#2E1B00
oklch(24.1% 0.051 73.2)
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 #03203D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.038
- Oxford Blue #1B263B ΔE 0.038
- Dark #1B2431 ΔE 0.041
- Navy Blue #001146 ΔE 0.050
- Jet #212529 ΔE 0.060
- Space Cadet #2B2D42 ΔE 0.074
- Marine #042E60 ΔE 0.075
- Dark Indigo #1F0954 ΔE 0.077
Use #03203D 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.