#0B2A40
Closest named color: Oxford Blue (#1B263B). oklch(27.4% 0.054 243.4), rgb(11, 42, 64).
Aa
White text reads best on this color (14.79:1).
About this color
#0B2A40 is a dark, muted blue. In OKLCH its lightness is 27%, its chroma 0.054 and its hue 243°. Its hue sits on the cool side of the wheel. The nearest named color is Oxford Blue (#1B263B), ΔE 0.021 away. White text reads best on it, at 14.79:1.
| Hue family | Blues |
| Lightness | dark (27%) |
| Chroma | muted (0.054) |
| Temperature | cool |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.41:1 |
| White text | 14.79:1 |
Values
| HEX | #0B2A40 |
| RGB | rgb(11, 42, 64) |
| HSL | hsl(205, 71%, 15%) |
| OKLCH | oklch(27.4% 0.054 243.4) |
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 #0B2A40 | 14.79:1 | AAA | Lc -104.3 | Preferred for body text |
| Black text on #0B2A40 | 1.41:1 | Fails | Lc 0.0 | Not readable |
| #0B2A40 text on white | 14.79:1 | AAA | Lc 101.5 | Preferred for body text |
| #0B2A40 text on black | 1.41:1 | 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
#F1F6FB
oklch(97.1% 0.009 247.9)
-
Step 100
100
#E0ECF6
oklch(93.7% 0.019 243)
-
Step 200
200
#C6DCEF
oklch(88.4% 0.035 244.2)
-
Step 300
300
#9DC6E8
oklch(80.9% 0.065 243.7)
-
Step 400
400
#64A8DC
oklch(70.7% 0.103 243)
-
Step 500
500
#3191D2
oklch(63.1% 0.131 243)
-
Step 600
600
#007ABC
oklch(55.7% 0.136 243.3)
-
Step 700
700
#00669F
oklch(49.1% 0.12 243.6)
-
Step 800
800
#005383
oklch(42.6% 0.105 243.8)
-
Step 900
900
#0A456B
oklch(37.6% 0.086 243.7)
-
Step 950
950 (this color)
#0B2A40
oklch(27.4% 0.054 243.4)
#0B2A40 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) | #202B41 | 0.026 |
| Deuteranopia (no green cones) | #192640 | 0.019 |
| Tritanopia (no blue cones) | #002F32 | 0.037 |
| Achromatopsia (no color) | #282828 | 0.054 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0B2A40
#0B2A40
oklch(27.4% 0.054 243.4)
- #3A2106
#3A2106
oklch(27.5% 0.055 63.8)
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 #0B2A40, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Oxford Blue #1B263B ΔE 0.021
- Dark #1B2431 ΔE 0.033
- Space Cadet #2B2D42 ΔE 0.045
- Jet #212529 ΔE 0.047
- Gunmetal #293241 ΔE 0.049
- Prussian Blue #1D3557 ΔE 0.057
- Midnight Green #073B4C ΔE 0.058
- Marine #042E60 ΔE 0.058
Use #0B2A40 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.