#0D3E57
Closest named color: Dark Blue Grey (#1F3B4D). oklch(34.5% 0.066 236.2), rgb(13, 62, 87).
Aa
White text reads best on this color (11.38:1).
About this color
#0D3E57 is a dark, muted blue. In OKLCH its lightness is 35%, its chroma 0.066 and its hue 236°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Blue Grey (#1F3B4D), ΔE 0.021 away. White text reads best on it, at 11.38:1.
| Hue family | Blues |
| Lightness | dark (35%) |
| Chroma | muted (0.066) |
| Temperature | cool |
| Nearest name | Dark Blue Grey (#1F3B4D) |
| Black text | 1.84:1 |
| White text | 11.38:1 |
Values
| HEX | #0D3E57 |
| RGB | rgb(13, 62, 87) |
| HSL | hsl(200, 74%, 20%) |
| OKLCH | oklch(34.5% 0.066 236.2) |
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 #0D3E57 | 11.38:1 | AAA | Lc -99.7 | Preferred for body text |
| Black text on #0D3E57 | 1.84:1 | Fails | Lc 7.9 | Not readable |
| #0D3E57 text on white | 11.38:1 | AAA | Lc 96.0 | Preferred for body text |
| #0D3E57 text on black | 1.84:1 | 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
#F1F6F9
oklch(97% 0.007 233.6)
-
Step 100
100
#E1ECF2
oklch(93.7% 0.014 231.2)
-
Step 200
200
#C9DCE9
oklch(88.4% 0.027 237.6)
-
Step 300
300
#A3C6DD
oklch(80.9% 0.05 237)
-
Step 400
400
#6FA9CC
oklch(70.8% 0.079 236)
-
Step 500
500
#4492BF
oklch(63% 0.102 236.8)
-
Step 600
600
#1D7CAB
oklch(55.6% 0.11 236.3)
-
Step 700
700
#0A6893
oklch(49% 0.103 236.6)
-
Step 800
800
#105577
oklch(42.6% 0.085 236.3)
-
Step 900
900 (this color)
#0D3E57
oklch(34.5% 0.066 236.2)
-
Step 950
950
#102938
oklch(26.9% 0.042 237.4)
#0D3E57 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) | #323E58 | 0.039 |
| Deuteranopia (no green cones) | #283757 | 0.032 |
| Tritanopia (no blue cones) | #004447 | 0.040 |
| Achromatopsia (no color) | #3A3A3A | 0.066 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0D3E57
#0D3E57
oklch(34.5% 0.066 236.2)
- #532F13
#532F13
oklch(34.5% 0.067 55.9)
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 #0D3E57, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Blue Grey #1F3B4D ΔE 0.021
- Midnight Green #073B4C ΔE 0.021
- Prussian Blue #1D3557 ΔE 0.030
- Charcoal #264653 ΔE 0.039
- Dark Grey Blue #29465B ΔE 0.039
- Marine Blue #01386A ΔE 0.043
- Gunmetal #293241 ΔE 0.051
- Onyx #343A40 ΔE 0.053
Use #0D3E57 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.