#0D303E
Closest named color: Oxford Blue (#1B263B). oklch(29.1% 0.047 228.3), rgb(13, 48, 62).
Aa
White text reads best on this color (13.91:1).
About this color
#0D303E is a dark, muted teal or cyan. In OKLCH its lightness is 29%, its chroma 0.047 and its hue 228°. Its hue sits on the cool side of the wheel. The nearest named color is Oxford Blue (#1B263B), ΔE 0.035 away. White text reads best on it, at 13.91:1.
| Hue family | Teals and cyans |
| Lightness | dark (29%) |
| Chroma | muted (0.047) |
| Temperature | cool |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.50:1 |
| White text | 13.91:1 |
Values
| HEX | #0D303E |
| RGB | rgb(13, 48, 62) |
| HSL | hsl(197, 65%, 15%) |
| OKLCH | oklch(29.1% 0.047 228.3) |
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 #0D303E | 13.91:1 | AAA | Lc -103.4 | Preferred for body text |
| Black text on #0D303E | 1.50:1 | Fails | Lc 0.0 | Not readable |
| #0D303E text on white | 13.91:1 | AAA | Lc 100.4 | Preferred for body text |
| #0D303E text on black | 1.50:1 | 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
#F1F6F9
oklch(97% 0.007 233.6)
-
Step 100
100
#DFECF2
oklch(93.5% 0.016 227)
-
Step 200
200
#C5DEE9
oklch(88.6% 0.031 226.1)
-
Step 300
300
#9CC8DD
oklch(80.8% 0.055 228.7)
-
Step 400
400
#60ACCC
oklch(70.8% 0.089 227.4)
-
Step 500
500
#2596BF
oklch(63.1% 0.113 228.1)
-
Step 600
600
#007FA5
oklch(55.7% 0.108 227.8)
-
Step 700
700
#006A8B
oklch(49% 0.096 228.3)
-
Step 800
800
#005773
oklch(42.7% 0.084 228.5)
-
Step 900
900
#004960
oklch(37.8% 0.073 227.3)
-
Step 950
950 (this color)
#0D303E
oklch(29.1% 0.047 228.3)
#0D303E 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) | #292F3F | 0.034 |
| Deuteranopia (no green cones) | #222A3E | 0.030 |
| Tritanopia (no blue cones) | #003435 | 0.027 |
| Achromatopsia (no color) | #2C2C2C | 0.047 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0D303E
#0D303E
oklch(29.1% 0.047 228.3)
- #3F2416
#3F2416
oklch(29.2% 0.048 47.6)
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 #0D303E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Oxford Blue #1B263B ΔE 0.035
- Gunmetal #293241 ΔE 0.036
- Midnight Green #073B4C ΔE 0.040
- Space Cadet #2B2D42 ΔE 0.040
- Dark #1B2431 ΔE 0.043
- Jet #212529 ΔE 0.048
- Dark Blue Grey #1F3B4D ΔE 0.048
- Prussian Blue #1D3557 ΔE 0.051
Use #0D303E 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.