#04367A
Closest named color: Marine Blue (#01386A). oklch(34.8% 0.126 258.5), rgb(4, 54, 122).
Aa
White text reads best on this color (11.57:1).
About this color
#04367A is a dark, moderately saturated blue. In OKLCH its lightness is 35%, its chroma 0.126 and its hue 259°. Its hue sits on the cool side of the wheel. The nearest named color is Marine Blue (#01386A), ΔE 0.029 away. White text reads best on it, at 11.57:1.
| Hue family | Blues |
| Lightness | dark (35%) |
| Chroma | moderately saturated (0.126) |
| Temperature | cool |
| Nearest name | Marine Blue (#01386A) |
| Black text | 1.81:1 |
| White text | 11.57:1 |
Values
| HEX | #04367A |
| RGB | rgb(4, 54, 122) |
| HSL | hsl(215, 94%, 25%) |
| OKLCH | oklch(34.8% 0.126 258.5) |
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 #04367A | 11.57:1 | AAA | Lc -99.7 | Preferred for body text |
| Black text on #04367A | 1.81:1 | Fails | Lc 7.9 | Not readable |
| #04367A text on white | 11.57:1 | AAA | Lc 96.0 | Preferred for body text |
| #04367A text on black | 1.81:1 | 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
#F0F6FE
oklch(97.1% 0.012 255.5)
-
Step 100
100
#DFEBFD
oklch(93.6% 0.028 258.4)
-
Step 200
200
#C4DBFD
oklch(88.5% 0.053 258)
-
Step 300
300
#9BC2FE
oklch(80.8% 0.095 258.8)
-
Step 400
400
#63A0FE
oklch(70.7% 0.152 258.8)
-
Step 500
500
#3485FC
oklch(63.1% 0.194 258.5)
-
Step 600
600
#006BEB
oklch(55.7% 0.21 258.5)
-
Step 700
700
#0059C7
oklch(49% 0.186 258.6)
-
Step 800
800
#0049A5
oklch(42.7% 0.162 258.5)
-
Step 900
900 (this color)
#04367A
oklch(34.8% 0.126 258.5)
-
Step 950
950
#0A254D
oklch(27% 0.081 258.5)
#04367A 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) | #003E7C | 0.023 |
| Deuteranopia (no green cones) | #003479 | 0.007 |
| Tritanopia (no blue cones) | #004752 | 0.096 |
| Achromatopsia (no color) | #393939 | 0.126 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #04367A
#04367A
oklch(34.8% 0.126 258.5)
- #4E3500
#4E3500
oklch(34.9% 0.072 79.5)
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 #04367A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Marine Blue #01386A ΔE 0.029
- Twilight Blue #0A437A ΔE 0.039
- Marine #042E60 ΔE 0.050
- Prussian Blue #1D3557 ΔE 0.062
- Cobalt #1E488F ΔE 0.066
- Midnight Blue #191970 ΔE 0.071
- Royal #0C1793 ΔE 0.074
- Light Navy #155084 ΔE 0.079
Use #04367A 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.