#0B3D54
Closest named color: Midnight Green (#073B4C). oklch(34% 0.064 233.9), rgb(11, 61, 84).
Aa
White text reads best on this color (11.60:1).
About this color
#0B3D54 is a dark, muted blue. In OKLCH its lightness is 34%, its chroma 0.064 and its hue 234°. Its hue sits on the cool side of the wheel. The nearest named color is Midnight Green (#073B4C), ΔE 0.015 away. White text reads best on it, at 11.60:1.
| Hue family | Blues |
| Lightness | dark (34%) |
| Chroma | muted (0.064) |
| Temperature | cool |
| Nearest name | Midnight Green (#073B4C) |
| Black text | 1.80:1 |
| White text | 11.60:1 |
Values
| HEX | #0B3D54 |
| RGB | rgb(11, 61, 84) |
| HSL | hsl(199, 77%, 19%) |
| OKLCH | oklch(34% 0.064 233.9) |
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 #0B3D54 | 11.60:1 | AAA | Lc -100.1 | Preferred for body text |
| Black text on #0B3D54 | 1.80:1 | Fails | Lc 7.5 | Not readable |
| #0B3D54 text on white | 11.60:1 | AAA | Lc 96.4 | Preferred for body text |
| #0B3D54 text on black | 1.80:1 | 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
#C9DDE8
oklch(88.6% 0.026 231.7)
-
Step 300
300
#A3C6DB
oklch(80.8% 0.048 234.5)
-
Step 400
400
#6FA9CA
oklch(70.7% 0.077 234.4)
-
Step 500
500
#4493BC
oklch(63.1% 0.099 234)
-
Step 600
600
#1C7DA8
oklch(55.7% 0.107 233.5)
-
Step 700
700
#0A6990
oklch(49.1% 0.099 233.7)
-
Step 800
800
#105675
oklch(42.8% 0.082 233.5)
-
Step 900
900 (this color)
#0B3D54
oklch(34% 0.064 233.9)
-
Step 950
950
#102A37
oklch(27.1% 0.04 232.6)
#0B3D54 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) | #323C55 | 0.041 |
| Deuteranopia (no green cones) | #283654 | 0.033 |
| Tritanopia (no blue cones) | #004345 | 0.039 |
| Achromatopsia (no color) | #393939 | 0.064 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0B3D54
#0B3D54
oklch(34% 0.064 233.9)
- #512E15
#512E15
oklch(34% 0.064 54.2)
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 #0B3D54, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Midnight Green #073B4C ΔE 0.015
- Dark Blue Grey #1F3B4D ΔE 0.018
- Prussian Blue #1D3557 ΔE 0.030
- Charcoal #264653 ΔE 0.041
- Dark Grey Blue #29465B ΔE 0.044
- Marine Blue #01386A ΔE 0.045
- Gunmetal #293241 ΔE 0.047
- Onyx #343A40 ΔE 0.052
Use #0B3D54 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.