#0B4E72
Closest named color: Deep Sea Blue (#015482). oklch(40.4% 0.086 239.3), rgb(11, 78, 114).
Aa
White text reads best on this color (8.94:1).
About this color
#0B4E72 is a dark, moderately saturated blue. In OKLCH its lightness is 40%, its chroma 0.086 and its hue 239°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Sea Blue (#015482), ΔE 0.029 away. White text reads best on it, at 8.94:1.
| Hue family | Blues |
| Lightness | dark (40%) |
| Chroma | moderately saturated (0.086) |
| Temperature | cool |
| Nearest name | Deep Sea Blue (#015482) |
| Black text | 2.34:1 |
| White text | 8.94:1 |
Values
| HEX | #0B4E72 |
| RGB | rgb(11, 78, 114) |
| HSL | hsl(201, 82%, 25%) |
| OKLCH | oklch(40.4% 0.086 239.3) |
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 #0B4E72 | 8.94:1 | AAA | Lc -94.6 | Preferred for body text |
| Black text on #0B4E72 | 2.34:1 | Fails | Lc 13.9 | Not readable |
| #0B4E72 text on white | 8.94:1 | AAA | Lc 90.1 | Preferred for body text |
| #0B4E72 text on black | 2.34:1 | Fails | Lc -12.2 | 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 800.
-
Step 50
50
#F2F6FA
oklch(97.1% 0.007 247.9)
-
Step 100
100
#E1EBF3
oklch(93.5% 0.015 241.8)
-
Step 200
200
#C9DCEA
oklch(88.5% 0.028 239.7)
-
Step 300
300
#A4C6DE
oklch(81% 0.05 239)
-
Step 400
400
#70A8CE
oklch(70.7% 0.081 239.1)
-
Step 500
500
#4791C1
oklch(63% 0.103 239.7)
-
Step 600
600
#237BAD
oklch(55.6% 0.111 239.1)
-
Step 700
700
#136795
oklch(49% 0.104 239.6)
-
Step 800
800 (this color)
#0B4E72
oklch(40.4% 0.086 239.3)
-
Step 900
900
#1A4661
oklch(37.7% 0.067 239.1)
-
Step 950
950
#112939
oklch(27% 0.042 240.1)
#0B4E72 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) | #3D4E74 | 0.045 |
| Deuteranopia (no green cones) | #2F4571 | 0.036 |
| Tritanopia (no blue cones) | #00575B | 0.056 |
| Achromatopsia (no color) | #494949 | 0.086 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0B4E72
#0B4E72
oklch(40.4% 0.086 239.3)
- #6A3C0E
#6A3C0E
oklch(40.5% 0.086 60)
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 #0B4E72, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Sea Blue #015482 ΔE 0.029
- Light Navy #155084 ΔE 0.031
- Twilight Blue #0A437A ΔE 0.039
- Dark Grey Blue #29465B ΔE 0.043
- Dusk Blue #26538D ΔE 0.051
- Deep Teal #00555A ΔE 0.053
- Charcoal #264653 ΔE 0.053
- Cobalt #1E488F ΔE 0.057
Use #0B4E72 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.