#0D213F
Closest named color: Oxford Blue (#1B263B). oklch(25% 0.063 258.4), rgb(13, 33, 63).
Aa
White text reads best on this color (16.07:1).
About this color
#0D213F is a very dark, muted blue. In OKLCH its lightness is 25%, its chroma 0.063 and its hue 258°. Its hue sits on the cool side of the wheel. The nearest named color is Oxford Blue (#1B263B), ΔE 0.029 away. White text reads best on it, at 16.07:1.
| Hue family | Blues |
| Lightness | very dark (25%) |
| Chroma | muted (0.063) |
| Temperature | cool |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.30:1 |
| White text | 16.07:1 |
Values
| HEX | #0D213F |
| RGB | rgb(13, 33, 63) |
| HSL | hsl(216, 66%, 15%) |
| OKLCH | oklch(25% 0.063 258.4) |
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 #0D213F | 16.07:1 | AAA | Lc -105.4 | Preferred for body text |
| Black text on #0D213F | 1.30:1 | Fails | Lc 0.0 | Not readable |
| #0D213F text on white | 16.07:1 | AAA | Lc 102.9 | Preferred for body text |
| #0D213F text on black | 1.30:1 | 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
#E1EBF9
oklch(93.7% 0.022 256.7)
-
Step 200
200
#C9DAF5
oklch(88.4% 0.042 259.6)
-
Step 300
300
#A4C2F1
oklch(80.8% 0.074 259.3)
-
Step 400
400
#72A2EA
oklch(70.8% 0.118 258.3)
-
Step 500
500
#4C88E4
oklch(63.1% 0.153 258.7)
-
Step 600
600
#2E70D2
oklch(55.6% 0.165 258.6)
-
Step 700
700
#205DB6
oklch(49.1% 0.154 258.5)
-
Step 800
800
#1D4D93
oklch(42.8% 0.127 258.3)
-
Step 900
900
#1D4075
oklch(37.6% 0.1 258.6)
-
Step 950
950 (this color)
#0D213F
oklch(25% 0.063 258.4)
#0D213F 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) | #132440 | 0.013 |
| Deuteranopia (no green cones) | #0B1F3E | 0.007 |
| Tritanopia (no blue cones) | #00282C | 0.051 |
| Achromatopsia (no color) | #212121 | 0.063 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0D213F
#0D213F
oklch(25% 0.063 258.4)
- #2F1E00
#2F1E00
oklch(25% 0.052 78.5)
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 #0D213F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Oxford Blue #1B263B ΔE 0.029
- Dark #1B2431 ΔE 0.036
- Rich Black #0D1B2A ΔE 0.042
- Jet #212529 ΔE 0.055
- Navy Blue #001146 ΔE 0.056
- Space Cadet #2B2D42 ΔE 0.063
- Marine #042E60 ΔE 0.068
- Dark Indigo #1F0954 ΔE 0.073
Use #0D213F 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.