#285371
Closest named color: Deep Sea Blue (#015482). oklch(42.5% 0.069 241.4), rgb(40, 83, 113).
Aa
White text reads best on this color (8.18:1).
About this color
#285371 is a dark, muted blue. In OKLCH its lightness is 43%, its chroma 0.069 and its hue 241°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Sea Blue (#015482), ΔE 0.033 away. White text reads best on it, at 8.18:1.
| Hue family | Blues |
| Lightness | dark (43%) |
| Chroma | muted (0.069) |
| Temperature | cool |
| Nearest name | Deep Sea Blue (#015482) |
| Black text | 2.56:1 |
| White text | 8.18:1 |
Values
| HEX | #285371 |
| RGB | rgb(40, 83, 113) |
| HSL | hsl(205, 48%, 30%) |
| OKLCH | oklch(42.5% 0.069 241.4) |
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 #285371 | 8.18:1 | AAA | Lc -92.8 | Preferred for body text |
| Black text on #285371 | 2.56:1 | Fails | Lc 15.9 | Dividers and decoration only |
| #285371 text on white | 8.18:1 | AAA | Lc 88.1 | Fine for body text |
| #285371 text on black | 2.56:1 | Fails | Lc -14.0 | 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 800.
-
Step 50
50
#F2F6F9
oklch(97.1% 0.006 239.8)
-
Step 100
100
#E3EBF1
oklch(93.6% 0.012 239.9)
-
Step 200
200
#CDDBE7
oklch(88.4% 0.022 243.8)
-
Step 300
300
#AAC5D9
oklch(81% 0.041 240.1)
-
Step 400
400
#7CA6C6
oklch(70.6% 0.065 241.7)
-
Step 500
500
#5A90B7
oklch(63.1% 0.082 241.2)
-
Step 600
600
#3E7AA3
oklch(55.7% 0.089 240.8)
-
Step 700
700
#30668C
oklch(49.1% 0.084 241.9)
-
Step 800
800 (this color)
#285371
oklch(42.5% 0.069 241.4)
-
Step 900
900
#26455C
oklch(37.7% 0.054 242.2)
-
Step 950
950
#172936
oklch(27.2% 0.034 241)
#285371 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) | #465372 | 0.036 |
| Deuteranopia (no green cones) | #3C4C70 | 0.029 |
| Tritanopia (no blue cones) | #005A5D | 0.051 |
| Achromatopsia (no color) | #4F4F4F | 0.069 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #285371
#285371
oklch(42.5% 0.069 241.4)
- #6A4524
#6A4524
oklch(42.5% 0.07 60.9)
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 #285371, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Sea Blue #015482 ΔE 0.033
- Light Navy #155084 ΔE 0.038
- YInMn Blue #415A77 ΔE 0.039
- Light Navy Blue #2E5A88 ΔE 0.041
- Petrol #005F6A ΔE 0.046
- Dusk Blue #26538D ΔE 0.047
- Dark Grey Blue #29465B ΔE 0.048
- Deep Teal #00555A ΔE 0.050
Use #285371 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.