#04284D
Closest named color: Marine (#042E60). oklch(27.6% 0.079 253), rgb(4, 40, 77).
Aa
White text reads best on this color (14.83:1).
About this color
#04284D is a dark, moderately saturated blue. In OKLCH its lightness is 28%, its chroma 0.079 and its hue 253°. Its hue sits on the cool side of the wheel. The nearest named color is Marine (#042E60), ΔE 0.038 away. White text reads best on it, at 14.83:1.
| Hue family | Blues |
| Lightness | dark (28%) |
| Chroma | moderately saturated (0.079) |
| Temperature | cool |
| Nearest name | Marine (#042E60) |
| Black text | 1.41:1 |
| White text | 14.83:1 |
Values
| HEX | #04284D |
| RGB | rgb(4, 40, 77) |
| HSL | hsl(210, 90%, 16%) |
| OKLCH | oklch(27.6% 0.079 253) |
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 #04284D | 14.83:1 | AAA | Lc -104.2 | Preferred for body text |
| Black text on #04284D | 1.41:1 | Fails | Lc 0.0 | Not readable |
| #04284D text on white | 14.83:1 | AAA | Lc 101.4 | Preferred for body text |
| #04284D text on black | 1.41:1 | 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 950.
-
Step 50
50
#F0F6FE
oklch(97.1% 0.012 255.5)
-
Step 100
100
#DEEBFC
oklch(93.5% 0.027 255.1)
-
Step 200
200
#C2DCFB
oklch(88.5% 0.051 252.9)
-
Step 300
300
#96C4FC
oklch(80.8% 0.094 253.7)
-
Step 400
400
#56A4FB
oklch(70.8% 0.15 252.9)
-
Step 500
500
#0D89F8
oklch(63% 0.191 253.2)
-
Step 600
600
#0073D4
oklch(55.6% 0.172 253.1)
-
Step 700
700
#0060B3
oklch(49% 0.152 253.2)
-
Step 800
800
#004F94
oklch(42.8% 0.131 252.8)
-
Step 900
900
#00417D
oklch(37.6% 0.117 253.3)
-
Step 950
950 (this color)
#04284D
oklch(27.6% 0.079 253)
#04284D 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) | #152B4E | 0.020 |
| Deuteranopia (no green cones) | #06254C | 0.009 |
| Tritanopia (no blue cones) | #003136 | 0.059 |
| Achromatopsia (no color) | #282828 | 0.079 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #04284D
#04284D
oklch(27.6% 0.079 253)
- #392200
#392200
oklch(27.5% 0.059 72.2)
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 #04284D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Marine #042E60 ΔE 0.038
- Oxford Blue #1B263B ΔE 0.038
- Prussian Blue #1D3557 ΔE 0.053
- Dark #1B2431 ΔE 0.054
- Space Cadet #2B2D42 ΔE 0.056
- Gunmetal #293241 ΔE 0.063
- Midnight Green #073B4C ΔE 0.065
- Marine Blue #01386A ΔE 0.068
Use #04284D 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.