#0B274D
Closest named color: Oxford Blue (#1B263B). oklch(27.6% 0.078 257.2), rgb(11, 39, 77).
Aa
White text reads best on this color (14.87:1).
About this color
#0B274D is a dark, moderately saturated blue. In OKLCH its lightness is 28%, its chroma 0.078 and its hue 257°. Its hue sits on the cool side of the wheel. The nearest named color is Oxford Blue (#1B263B), ΔE 0.036 away. White text reads best on it, at 14.87:1.
| Hue family | Blues |
| Lightness | dark (28%) |
| Chroma | moderately saturated (0.078) |
| Temperature | cool |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.41:1 |
| White text | 14.87:1 |
Values
| HEX | #0B274D |
| RGB | rgb(11, 39, 77) |
| HSL | hsl(215, 75%, 17%) |
| OKLCH | oklch(27.6% 0.078 257.2) |
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 #0B274D | 14.87:1 | AAA | Lc -104.3 | Preferred for body text |
| Black text on #0B274D | 1.41:1 | Fails | Lc 0.0 | Not readable |
| #0B274D text on white | 14.87:1 | AAA | Lc 101.5 | Preferred for body text |
| #0B274D 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
#F0F6FE
oklch(97.1% 0.012 255.5)
-
Step 100
100
#DFEBFC
oklch(93.6% 0.026 257)
-
Step 200
200
#C4DBFB
oklch(88.5% 0.051 256.7)
-
Step 300
300
#9BC3FC
oklch(80.9% 0.092 257.2)
-
Step 400
400
#62A1FB
oklch(70.7% 0.148 257.4)
-
Step 500
500
#3186F8
oklch(63% 0.189 257.3)
-
Step 600
600
#006DE4
oklch(55.5% 0.199 257.3)
-
Step 700
700
#005CC1
oklch(49.2% 0.175 257.1)
-
Step 800
800
#004BA0
oklch(42.8% 0.152 257.1)
-
Step 900
900
#0B3F81
oklch(37.7% 0.123 257.2)
-
Step 950
950 (this color)
#0B274D
oklch(27.6% 0.078 257.2)
#0B274D 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) | #132B4E | 0.016 |
| Deuteranopia (no green cones) | #06254C | 0.008 |
| Tritanopia (no blue cones) | #003036 | 0.059 |
| Achromatopsia (no color) | #272727 | 0.078 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0B274D
#0B274D
oklch(27.6% 0.078 257.2)
- #372300
#372300
oklch(27.4% 0.057 76.9)
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 #0B274D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Oxford Blue #1B263B ΔE 0.036
- Marine #042E60 ΔE 0.038
- Prussian Blue #1D3557 ΔE 0.053
- Dark #1B2431 ΔE 0.053
- Space Cadet #2B2D42 ΔE 0.054
- Gunmetal #293241 ΔE 0.062
- Midnight Green #073B4C ΔE 0.068
- Marine Blue #01386A ΔE 0.069
Use #0B274D 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.