#0D303A
Closest named color: Oxford Blue (#1B263B). oklch(28.9% 0.043 220.2), rgb(13, 48, 58).
Aa
White text reads best on this color (13.99:1).
About this color
#0D303A is a dark, muted teal or cyan. In OKLCH its lightness is 29%, its chroma 0.043 and its hue 220°. Its hue sits on the cool side of the wheel. The nearest named color is Oxford Blue (#1B263B), ΔE 0.037 away. White text reads best on it, at 13.99:1.
| Hue family | Teals and cyans |
| Lightness | dark (29%) |
| Chroma | muted (0.043) |
| Temperature | cool |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.50:1 |
| White text | 13.99:1 |
Values
| HEX | #0D303A |
| RGB | rgb(13, 48, 58) |
| HSL | hsl(193, 63%, 14%) |
| OKLCH | oklch(28.9% 0.043 220.2) |
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 #0D303A | 13.99:1 | AAA | Lc -103.5 | Preferred for body text |
| Black text on #0D303A | 1.50:1 | Fails | Lc 0.0 | Not readable |
| #0D303A text on white | 13.99:1 | AAA | Lc 100.5 | Preferred for body text |
| #0D303A 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
#F1F7F9
oklch(97.2% 0.007 219.6)
-
Step 100
100
#E0ECF1
oklch(93.6% 0.015 224.5)
-
Step 200
200
#C6DEE6
oklch(88.5% 0.028 219.8)
-
Step 300
300
#9CC9D8
oklch(80.9% 0.052 220.3)
-
Step 400
400
#62ADC4
oklch(70.8% 0.082 219.9)
-
Step 500
500
#2898B5
oklch(63.2% 0.104 219.8)
-
Step 600
600
#00809C
oklch(55.5% 0.101 220.3)
-
Step 700
700
#006C84
oklch(49.2% 0.09 220.2)
-
Step 800
800
#00586C
oklch(42.6% 0.078 220.2)
-
Step 900
900
#014A5B
oklch(37.9% 0.068 220)
-
Step 950
950 (this color)
#0D303A
oklch(28.9% 0.043 220.2)
#0D303A 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) | #2A2F3B | 0.036 |
| Deuteranopia (no green cones) | #242A3A | 0.032 |
| Tritanopia (no blue cones) | #003333 | 0.021 |
| Achromatopsia (no color) | #2C2C2C | 0.043 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0D303A
#0D303A
oklch(28.9% 0.043 220.2)
- #3D231A
#3D231A
oklch(28.7% 0.043 39.8)
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 #0D303A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Oxford Blue #1B263B ΔE 0.037
- Gunmetal #293241 ΔE 0.038
- Dark #1B2431 ΔE 0.041
- Midnight Green #073B4C ΔE 0.043
- Space Cadet #2B2D42 ΔE 0.043
- Jet #212529 ΔE 0.044
- Dark Blue Grey #1F3B4D ΔE 0.052
- Prussian Blue #1D3557 ΔE 0.057
Use #0D303A 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.