#0D3B4E
Closest named color: Midnight Green (#073B4C). oklch(33.2% 0.058 230.3), rgb(13, 59, 78).
Aa
White text reads best on this color (11.98:1).
About this color
#0D3B4E is a dark, muted blue. In OKLCH its lightness is 33%, its chroma 0.058 and its hue 230°. Its hue sits on the cool side of the wheel. The nearest named color is Midnight Green (#073B4C), ΔE 0.005 away. White text reads best on it, at 11.98:1.
| Hue family | Blues |
| Lightness | dark (33%) |
| Chroma | muted (0.058) |
| Temperature | cool |
| Nearest name | Midnight Green (#073B4C) |
| Black text | 1.75:1 |
| White text | 11.98:1 |
Values
| HEX | #0D3B4E |
| RGB | rgb(13, 59, 78) |
| HSL | hsl(198, 71%, 18%) |
| OKLCH | oklch(33.2% 0.058 230.3) |
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 #0D3B4E | 11.98:1 | AAA | Lc -100.7 | Preferred for body text |
| Black text on #0D3B4E | 1.75:1 | Fails | Lc 0.0 | Not readable |
| #0D3B4E text on white | 11.98:1 | AAA | Lc 97.2 | Preferred for body text |
| #0D3B4E 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
#F2F6F9
oklch(97.1% 0.006 239.8)
-
Step 100
100
#E2ECF1
oklch(93.7% 0.013 228.9)
-
Step 200
200
#CADDE6
oklch(88.6% 0.024 227.8)
-
Step 300
300
#A5C6D8
oklch(80.8% 0.044 231.9)
-
Step 400
400
#72A9C4
oklch(70.7% 0.07 230.2)
-
Step 500
500
#4A93B5
oklch(63% 0.089 230.6)
-
Step 600
600
#267DA1
oklch(55.5% 0.097 230.3)
-
Step 700
700
#17698A
oklch(49% 0.09 230.8)
-
Step 800
800
#175670
oklch(42.7% 0.075 230.3)
-
Step 900
900 (this color)
#0D3B4E
oklch(33.2% 0.058 230.3)
-
Step 950
950
#112A35
oklch(27.1% 0.037 229)
#0D3B4E 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) | #313A4F | 0.040 |
| Deuteranopia (no green cones) | #29344E | 0.034 |
| Tritanopia (no blue cones) | #004041 | 0.034 |
| Achromatopsia (no color) | #373737 | 0.058 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0D3B4E
#0D3B4E
oklch(33.2% 0.058 230.3)
- #4E2C19
#4E2C19
oklch(33.2% 0.059 49)
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 #0D3B4E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Midnight Green #073B4C ΔE 0.005
- Dark Blue Grey #1F3B4D ΔE 0.015
- Prussian Blue #1D3557 ΔE 0.031
- Gunmetal #293241 ΔE 0.039
- Charcoal #264653 ΔE 0.046
- Onyx #343A40 ΔE 0.048
- Dark Grey Blue #29465B ΔE 0.051
- Space Cadet #2B2D42 ΔE 0.052
Use #0D3B4E 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.