#06397A
Closest named color: Marine Blue (#01386A). oklch(35.6% 0.122 257.6), rgb(6, 57, 122).
Aa
White text reads best on this color (11.20:1).
About this color
#06397A is a dark, moderately saturated blue. In OKLCH its lightness is 36%, its chroma 0.122 and its hue 258°. Its hue sits on the cool side of the wheel. The nearest named color is Marine Blue (#01386A), ΔE 0.028 away. White text reads best on it, at 11.20:1.
| Hue family | Blues |
| Lightness | dark (36%) |
| Chroma | moderately saturated (0.122) |
| Temperature | cool |
| Nearest name | Marine Blue (#01386A) |
| Black text | 1.87:1 |
| White text | 11.20:1 |
Values
| HEX | #06397A |
| RGB | rgb(6, 57, 122) |
| HSL | hsl(214, 91%, 25%) |
| OKLCH | oklch(35.6% 0.122 257.6) |
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 #06397A | 11.20:1 | AAA | Lc -99.1 | Preferred for body text |
| Black text on #06397A | 1.87:1 | Fails | Lc 8.6 | Not readable |
| #06397A text on white | 11.20:1 | AAA | Lc 95.3 | Preferred for body text |
| #06397A text on black | 1.87:1 | Fails | Lc -7.4 | 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
#F0F6FE
oklch(97.1% 0.012 255.5)
-
Step 100
100
#DFEBFC
oklch(93.6% 0.026 257)
-
Step 200
200
#C5DBFB
oklch(88.5% 0.05 257.7)
-
Step 300
300
#9BC3FC
oklch(80.9% 0.092 257.2)
-
Step 400
400
#63A1FA
oklch(70.7% 0.146 257.5)
-
Step 500
500
#3486F8
oklch(63.1% 0.188 257.7)
-
Step 600
600
#006DE6
oklch(55.7% 0.202 257.5)
-
Step 700
700
#005BC3
oklch(49.1% 0.179 257.6)
-
Step 800
800
#004AA1
oklch(42.6% 0.155 257.6)
-
Step 900
900 (this color)
#06397A
oklch(35.6% 0.122 257.6)
-
Step 950
950
#0A254B
oklch(26.8% 0.078 257.8)
#06397A 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) | #0B407C | 0.021 |
| Deuteranopia (no green cones) | #003679 | 0.010 |
| Tritanopia (no blue cones) | #004953 | 0.093 |
| Achromatopsia (no color) | #3B3B3B | 0.122 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #06397A
#06397A
oklch(35.6% 0.122 257.6)
- #513600
#513600
oklch(35.5% 0.074 77.7)
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 #06397A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Marine Blue #01386A ΔE 0.028
- Twilight Blue #0A437A ΔE 0.030
- Marine #042E60 ΔE 0.054
- Cobalt #1E488F ΔE 0.059
- Prussian Blue #1D3557 ΔE 0.061
- Light Navy #155084 ΔE 0.071
- Dark Grey Blue #29465B ΔE 0.079
- Midnight Blue #191970 ΔE 0.079
Use #06397A 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.