#0B2F5D
Closest named color: Marine (#042E60). oklch(30.9% 0.092 256.6), rgb(11, 47, 93).
Aa
White text reads best on this color (13.30:1).
About this color
#0B2F5D is a dark, moderately saturated blue. In OKLCH its lightness is 31%, its chroma 0.092 and its hue 257°. Its hue sits on the cool side of the wheel. The nearest named color is Marine (#042E60), ΔE 0.008 away. White text reads best on it, at 13.30:1.
| Hue family | Blues |
| Lightness | dark (31%) |
| Chroma | moderately saturated (0.092) |
| Temperature | cool |
| Nearest name | Marine (#042E60) |
| Black text | 1.57:1 |
| White text | 13.30:1 |
Values
| HEX | #0B2F5D |
| RGB | rgb(11, 47, 93) |
| HSL | hsl(214, 79%, 20%) |
| OKLCH | oklch(30.9% 0.092 256.6) |
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 #0B2F5D | 13.30:1 | AAA | Lc -102.6 | Preferred for body text |
| Black text on #0B2F5D | 1.57:1 | Fails | Lc 0.0 | Not readable |
| #0B2F5D text on white | 13.30:1 | AAA | Lc 99.3 | Preferred for body text |
| #0B2F5D text on black | 1.57:1 | 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
#F0F6FF
oklch(97.1% 0.014 258.3)
-
Step 100
100
#DDEBFF
oklch(93.6% 0.031 257.2)
-
Step 200
200
#C2DBFF
oklch(88.5% 0.057 257.5)
-
Step 300
300
#98C3FF
oklch(80.9% 0.097 256.8)
-
Step 400
400
#5CA1FF
oklch(70.6% 0.155 256.6)
-
Step 500
500
#2386FF
oklch(63.2% 0.2 256.6)
-
Step 600
600
#006EE1
oklch(55.5% 0.194 256.7)
-
Step 700
700
#005CBF
oklch(49% 0.172 256.8)
-
Step 800
800
#004B9E
oklch(42.6% 0.15 256.7)
-
Step 900
900
#003F85
oklch(37.8% 0.131 256.3)
-
Step 950
950 (this color)
#0B2F5D
oklch(30.9% 0.092 256.6)
#0B2F5D 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) | #16335F | 0.017 |
| Deuteranopia (no green cones) | #022C5C | 0.012 |
| Tritanopia (no blue cones) | #003A41 | 0.070 |
| Achromatopsia (no color) | #2F2F2F | 0.092 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0B2F5D
#0B2F5D
oklch(30.9% 0.092 256.6)
- #422B00
#422B00
oklch(30.9% 0.065 77.3)
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 #0B2F5D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Marine #042E60 ΔE 0.008
- Prussian Blue #1D3557 ΔE 0.030
- Marine Blue #01386A ΔE 0.033
- Midnight Green #073B4C ΔE 0.055
- Dark Blue Grey #1F3B4D ΔE 0.058
- Space Cadet #2B2D42 ΔE 0.059
- Gunmetal #293241 ΔE 0.062
- Oxford Blue #1B263B ΔE 0.064
Use #0B2F5D 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.