#285571
Closest named color: Deep Sea Blue (#015482). oklch(43.1% 0.068 238.4), rgb(40, 85, 113).
Aa
White text reads best on this color (7.99:1).
About this color
#285571 is a dark, muted blue. In OKLCH its lightness is 43%, its chroma 0.068 and its hue 238°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Sea Blue (#015482), ΔE 0.035 away. White text reads best on it, at 7.99:1.
| Hue family | Blues |
| Lightness | dark (43%) |
| Chroma | muted (0.068) |
| Temperature | cool |
| Nearest name | Deep Sea Blue (#015482) |
| Black text | 2.62:1 |
| White text | 7.99:1 |
Values
| HEX | #285571 |
| RGB | rgb(40, 85, 113) |
| HSL | hsl(203, 48%, 30%) |
| OKLCH | oklch(43.1% 0.068 238.4) |
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 #285571 | 7.99:1 | AAA | Lc -92.2 | Preferred for body text |
| Black text on #285571 | 2.62:1 | Fails | Lc 16.5 | Dividers and decoration only |
| #285571 text on white | 7.99:1 | AAA | Lc 87.5 | Fine for body text |
| #285571 text on black | 2.62:1 | Fails | Lc -14.6 | 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
#CCDCE6
oklch(88.5% 0.022 235)
-
Step 300
300
#AAC5D8
oklch(80.9% 0.04 238.7)
-
Step 400
400
#7CA7C4
oklch(70.8% 0.063 238.3)
-
Step 500
500
#5891B5
oklch(63.2% 0.081 237.7)
-
Step 600
600
#3C7AA1
oklch(55.5% 0.088 238.7)
-
Step 700
700
#2E678A
oklch(49.2% 0.082 238.5)
-
Step 800
800 (this color)
#285571
oklch(43.1% 0.068 238.4)
-
Step 900
900
#25465B
oklch(37.9% 0.053 238.3)
-
Step 950
950
#162935
oklch(27.1% 0.033 237.5)
#285571 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) | #485572 | 0.038 |
| Deuteranopia (no green cones) | #3E4D71 | 0.033 |
| Tritanopia (no blue cones) | #005C5E | 0.050 |
| Achromatopsia (no color) | #515151 | 0.068 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #285571
#285571
oklch(43.1% 0.068 238.4)
- #6C4628
#6C4628
oklch(43.1% 0.068 57.9)
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 #285571, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Sea Blue #015482 ΔE 0.035
- YInMn Blue #415A77 ΔE 0.035
- Light Navy Blue #2E5A88 ΔE 0.040
- Petrol #005F6A ΔE 0.041
- Light Navy #155084 ΔE 0.041
- Deep Teal #00555A ΔE 0.048
- Dusk Blue #26538D ΔE 0.049
- Dark Grey Blue #29465B ΔE 0.053
Use #285571 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.