#06307B
Closest named color: Marine Blue (#01386A). oklch(33.6% 0.135 261.2), rgb(6, 48, 123).
Aa
White text reads best on this color (12.23:1).
About this color
#06307B is a dark, moderately saturated blue. In OKLCH its lightness is 34%, its chroma 0.135 and its hue 261°. Its hue sits on the cool side of the wheel. The nearest named color is Marine Blue (#01386A), ΔE 0.038 away. White text reads best on it, at 12.23:1.
| Hue family | Blues |
| Lightness | dark (34%) |
| Chroma | moderately saturated (0.135) |
| Temperature | cool |
| Nearest name | Marine Blue (#01386A) |
| Black text | 1.71:1 |
| White text | 12.23:1 |
Values
| HEX | #06307B |
| RGB | rgb(6, 48, 123) |
| HSL | hsl(218, 91%, 25%) |
| OKLCH | oklch(33.6% 0.135 261.2) |
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 #06307B | 12.23:1 | AAA | Lc -100.8 | Preferred for body text |
| Black text on #06307B | 1.71:1 | Fails | Lc 0.0 | Not readable |
| #06307B text on white | 12.23:1 | AAA | Lc 97.2 | Preferred for body text |
| #06307B text on black | 1.71:1 | 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 900.
-
Step 50
50
#F0F6FF
oklch(97.1% 0.014 258.3)
-
Step 100
100
#DFEBFE
oklch(93.7% 0.029 259.6)
-
Step 200
200
#C5DAFF
oklch(88.5% 0.056 261.8)
-
Step 300
300
#9EC1FF
oklch(80.8% 0.096 261.6)
-
Step 400
400
#699FFF
oklch(70.8% 0.152 261.1)
-
Step 500
500
#3E82FF
oklch(63% 0.199 261.3)
-
Step 600
600
#1566F4
oklch(55.6% 0.226 261.2)
-
Step 700
700
#0653D4
oklch(49% 0.209 261.3)
-
Step 800
800
#0B45AC
oklch(42.7% 0.174 261.3)
-
Step 900
900 (this color)
#06307B
oklch(33.6% 0.135 261.2)
-
Step 950
950
#0C244F
oklch(27% 0.085 261)
#06307B 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) | #003B7E | 0.030 |
| Deuteranopia (no green cones) | #00307A | 0.004 |
| Tritanopia (no blue cones) | #004350 | 0.103 |
| Achromatopsia (no color) | #353535 | 0.135 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #06307B
#06307B
oklch(33.6% 0.135 261.2)
- #493200
#493200
oklch(33.5% 0.069 80.5)
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 #06307B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Marine Blue #01386A ΔE 0.038
- Marine #042E60 ΔE 0.048
- Twilight Blue #0A437A ΔE 0.055
- Midnight Blue #191970 ΔE 0.056
- Royal #0C1793 ΔE 0.060
- Prussian Blue #1D3557 ΔE 0.068
- Cobalt #1E488F ΔE 0.078
- Dark Blue #00008B ΔE 0.081
Use #06307B 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.