#0B4863
Closest named color: Dark Grey Blue (#29465B). oklch(37.9% 0.074 233.7), rgb(11, 72, 99).
Aa
White text reads best on this color (9.89:1).
About this color
#0B4863 is a dark, moderately saturated blue. In OKLCH its lightness is 38%, its chroma 0.074 and its hue 234°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.025 away. White text reads best on it, at 9.89:1.
| Hue family | Blues |
| Lightness | dark (38%) |
| Chroma | moderately saturated (0.074) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 2.12:1 |
| White text | 9.89:1 |
Values
| HEX | #0B4863 |
| RGB | rgb(11, 72, 99) |
| HSL | hsl(198, 80%, 22%) |
| OKLCH | oklch(37.9% 0.074 233.7) |
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 #0B4863 | 9.89:1 | AAA | Lc -96.8 | Preferred for body text |
| Black text on #0B4863 | 2.12:1 | Fails | Lc 11.3 | Not readable |
| #0B4863 text on white | 9.89:1 | AAA | Lc 92.6 | Preferred for body text |
| #0B4863 text on black | 2.12:1 | Fails | Lc -9.8 | 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
#F1F6FA
oklch(97.1% 0.008 241.7)
-
Step 100
100
#E0ECF3
oklch(93.6% 0.016 233)
-
Step 200
200
#C6DDEB
oklch(88.5% 0.031 234.5)
-
Step 300
300
#9EC7DF
oklch(80.8% 0.055 234)
-
Step 400
400
#66AACF
oklch(70.7% 0.088 233.7)
-
Step 500
500
#3294C3
oklch(63.1% 0.113 233.8)
-
Step 600
600
#007DAC
oklch(55.5% 0.116 233.8)
-
Step 700
700
#006991
oklch(49% 0.102 233.6)
-
Step 800
800
#005678
oklch(42.7% 0.089 233.9)
-
Step 900
900 (this color)
#0B4863
oklch(37.9% 0.074 233.7)
-
Step 950
950
#0A2A3A
oklch(27% 0.047 234.3)
#0B4863 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) | #3B4764 | 0.046 |
| Deuteranopia (no green cones) | #2F3F63 | 0.039 |
| Tritanopia (no blue cones) | #004F51 | 0.045 |
| Achromatopsia (no color) | #434343 | 0.074 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0B4863
#0B4863
oklch(37.9% 0.074 233.7)
- #603618
#603618
oklch(37.9% 0.074 53.8)
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 #0B4863, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.025
- Charcoal #264653 ΔE 0.031
- Dark Teal #014D4E ΔE 0.045
- Twilight Blue #0A437A ΔE 0.046
- Dark Blue Grey #1F3B4D ΔE 0.049
- Deep Teal #00555A ΔE 0.050
- Midnight Green #073B4C ΔE 0.053
- Dark Slate Gray #2F4F4F ΔE 0.055
Use #0B4863 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.