#05284E
Closest named color: Marine (#042E60). oklch(27.7% 0.08 254), rgb(5, 40, 78).
Aa
White text reads best on this color (14.78:1).
About this color
#05284E is a dark, moderately saturated blue. In OKLCH its lightness is 28%, its chroma 0.080 and its hue 254°. Its hue sits on the cool side of the wheel. The nearest named color is Marine (#042E60), ΔE 0.036 away. White text reads best on it, at 14.78:1.
| Hue family | Blues |
| Lightness | dark (28%) |
| Chroma | moderately saturated (0.080) |
| Temperature | cool |
| Nearest name | Marine (#042E60) |
| Black text | 1.41:1 |
| White text | 14.78:1 |
Values
| HEX | #05284E |
| RGB | rgb(5, 40, 78) |
| HSL | hsl(211, 88%, 16%) |
| OKLCH | oklch(27.7% 0.08 254) |
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 #05284E | 14.78:1 | AAA | Lc -104.2 | Preferred for body text |
| Black text on #05284E | 1.41:1 | Fails | Lc 0.0 | Not readable |
| #05284E text on white | 14.78:1 | AAA | Lc 101.3 | Preferred for body text |
| #05284E 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
#C2DCFC
oklch(88.6% 0.052 253.7)
-
Step 300
300
#96C4FD
oklch(80.9% 0.095 254.2)
-
Step 400
400
#57A3FC
oklch(70.7% 0.151 253.8)
-
Step 500
500
#1488FA
oklch(63% 0.194 254.1)
-
Step 600
600
#0072D7
oklch(55.6% 0.177 254)
-
Step 700
700
#005FB6
oklch(49% 0.157 254.2)
-
Step 800
800
#004E97
oklch(42.8% 0.136 254.1)
-
Step 900
900
#00417F
oklch(37.8% 0.12 253.9)
-
Step 950
950 (this color)
#05284E
oklch(27.7% 0.08 254)
#05284E 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) | #142B4F | 0.018 |
| Deuteranopia (no green cones) | #05254D | 0.010 |
| Tritanopia (no blue cones) | #003137 | 0.059 |
| Achromatopsia (no color) | #282828 | 0.080 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #05284E
#05284E
oklch(27.7% 0.08 254)
- #392300
#392300
oklch(27.7% 0.059 74.1)
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 #05284E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Marine #042E60 ΔE 0.036
- Oxford Blue #1B263B ΔE 0.039
- Prussian Blue #1D3557 ΔE 0.052
- Dark #1B2431 ΔE 0.056
- Space Cadet #2B2D42 ΔE 0.056
- Gunmetal #293241 ΔE 0.064
- Midnight Green #073B4C ΔE 0.066
- Marine Blue #01386A ΔE 0.066
Use #05284E 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.