#0D3A55
Closest named color: Midnight Green (#073B4C). oklch(33.3% 0.067 240.2), rgb(13, 58, 85).
Aa
White text reads best on this color (11.97:1).
About this color
#0D3A55 is a dark, muted blue. In OKLCH its lightness is 33%, its chroma 0.067 and its hue 240°. Its hue sits on the cool side of the wheel. The nearest named color is Midnight Green (#073B4C), ΔE 0.018 away. White text reads best on it, at 11.97:1.
| Hue family | Blues |
| Lightness | dark (33%) |
| Chroma | muted (0.067) |
| Temperature | cool |
| Nearest name | Midnight Green (#073B4C) |
| Black text | 1.75:1 |
| White text | 11.97:1 |
Values
| HEX | #0D3A55 |
| RGB | rgb(13, 58, 85) |
| HSL | hsl(203, 73%, 19%) |
| OKLCH | oklch(33.3% 0.067 240.2) |
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 #0D3A55 | 11.97:1 | AAA | Lc -100.7 | Preferred for body text |
| Black text on #0D3A55 | 1.75:1 | Fails | Lc 0.0 | Not readable |
| #0D3A55 text on white | 11.97:1 | AAA | Lc 97.1 | Preferred for body text |
| #0D3A55 text on black | 1.75:1 | 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 900.
-
Step 50
50
#F2F6FA
oklch(97.1% 0.007 247.9)
-
Step 100
100
#E2EBF3
oklch(93.6% 0.015 244.7)
-
Step 200
200
#C9DCEA
oklch(88.5% 0.028 239.7)
-
Step 300
300
#A4C6DE
oklch(81% 0.05 239)
-
Step 400
400
#71A8CE
oklch(70.8% 0.08 239.5)
-
Step 500
500
#4991C1
oklch(63.1% 0.102 240.3)
-
Step 600
600
#257BAE
oklch(55.7% 0.112 239.9)
-
Step 700
700
#166795
oklch(49.1% 0.104 240)
-
Step 800
800
#175479
oklch(42.6% 0.086 240.4)
-
Step 900
900 (this color)
#0D3A55
oklch(33.3% 0.067 240.2)
-
Step 950
950
#112939
oklch(27% 0.042 240.1)
#0D3A55 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) | #2D3A56 | 0.034 |
| Deuteranopia (no green cones) | #233455 | 0.026 |
| Tritanopia (no blue cones) | #004143 | 0.046 |
| Achromatopsia (no color) | #373737 | 0.067 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0D3A55
#0D3A55
oklch(33.3% 0.067 240.2)
- #4F2D0C
#4F2D0C
oklch(33.4% 0.067 60.5)
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 #0D3A55, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Midnight Green #073B4C ΔE 0.018
- Prussian Blue #1D3557 ΔE 0.021
- Dark Blue Grey #1F3B4D ΔE 0.021
- Marine Blue #01386A ΔE 0.039
- Gunmetal #293241 ΔE 0.044
- Marine #042E60 ΔE 0.047
- Charcoal #264653 ΔE 0.050
- Dark Grey Blue #29465B ΔE 0.051
Use #0D3A55 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.