#0D3748
Closest named color: Midnight Green (#073B4C). oklch(31.7% 0.054 229.4), rgb(13, 55, 72).
Aa
White text reads best on this color (12.67:1).
About this color
#0D3748 is a dark, muted teal or cyan. In OKLCH its lightness is 32%, its chroma 0.054 and its hue 229°. Its hue sits on the cool side of the wheel. The nearest named color is Midnight Green (#073B4C), ΔE 0.013 away. White text reads best on it, at 12.67:1.
| Hue family | Teals and cyans |
| Lightness | dark (32%) |
| Chroma | muted (0.054) |
| Temperature | cool |
| Nearest name | Midnight Green (#073B4C) |
| Black text | 1.65:1 |
| White text | 12.67:1 |
Values
| HEX | #0D3748 |
| RGB | rgb(13, 55, 72) |
| HSL | hsl(197, 69%, 17%) |
| OKLCH | oklch(31.7% 0.054 229.4) |
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 #0D3748 | 12.67:1 | AAA | Lc -101.9 | Preferred for body text |
| Black text on #0D3748 | 1.65:1 | Fails | Lc 0.0 | Not readable |
| #0D3748 text on white | 12.67:1 | AAA | Lc 98.5 | Preferred for body text |
| #0D3748 text on black | 1.65:1 | 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
#F0F7FA
oklch(97.2% 0.008 225.1)
-
Step 100
100
#DEEDF4
oklch(93.7% 0.019 227.3)
-
Step 200
200
#C2DEEC
oklch(88.4% 0.035 229.3)
-
Step 300
300
#96C9E2
oklch(80.9% 0.064 229.6)
-
Step 400
400
#53ADD4
oklch(70.8% 0.103 229.1)
-
Step 500
500
#0096C5
oklch(63% 0.125 229.4)
-
Step 600
600
#007EA7
oklch(55.5% 0.111 230)
-
Step 700
700
#006A8D
oklch(49.1% 0.098 229.8)
-
Step 800
800
#005774
oklch(42.7% 0.085 229.4)
-
Step 900
900
#004861
oklch(37.6% 0.075 229.8)
-
Step 950
950 (this color)
#0D3748
oklch(31.7% 0.054 229.4)
#0D3748 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) | #2E3649 | 0.038 |
| Deuteranopia (no green cones) | #263048 | 0.033 |
| Tritanopia (no blue cones) | #003C3D | 0.031 |
| Achromatopsia (no color) | #333333 | 0.054 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0D3748
#0D3748
oklch(31.7% 0.054 229.4)
- #482918
#482918
oklch(31.6% 0.054 48.7)
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 #0D3748, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Midnight Green #073B4C ΔE 0.013
- Dark Blue Grey #1F3B4D ΔE 0.024
- Gunmetal #293241 ΔE 0.032
- Prussian Blue #1D3557 ΔE 0.034
- Space Cadet #2B2D42 ΔE 0.043
- Onyx #343A40 ΔE 0.050
- Oxford Blue #1B263B ΔE 0.056
- Marine #042E60 ΔE 0.058
Use #0D3748 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.