#285B73
Closest named color: YInMn Blue (#415A77). oklch(44.7% 0.067 231.3), rgb(40, 91, 115).
Aa
White text reads best on this color (7.40:1).
About this color
#285B73 is a dark, muted blue. In OKLCH its lightness is 45%, its chroma 0.067 and its hue 231°. Its hue sits on the cool side of the wheel. The nearest named color is YInMn Blue (#415A77), ΔE 0.028 away. White text reads best on it, at 7.40:1.
| Hue family | Blues |
| Lightness | dark (45%) |
| Chroma | muted (0.067) |
| Temperature | cool |
| Nearest name | YInMn Blue (#415A77) |
| Black text | 2.83:1 |
| White text | 7.40:1 |
Values
| HEX | #285B73 |
| RGB | rgb(40, 91, 115) |
| HSL | hsl(199, 48%, 30%) |
| OKLCH | oklch(44.7% 0.067 231.3) |
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 #285B73 | 7.40:1 | AAA | Lc -90.4 | Preferred for body text |
| Black text on #285B73 | 2.83:1 | Fails | Lc 18.5 | Dividers and decoration only |
| #285B73 text on white | 7.40:1 | AAA | Lc 85.6 | Fine for body text |
| #285B73 text on black | 2.83:1 | Fails | Lc -16.5 | Dividers and decoration only |
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
#F2F6F8
oklch(97.1% 0.005 228.8)
-
Step 100
100
#E3EBF0
oklch(93.5% 0.011 234.8)
-
Step 200
200
#CCDCE5
oklch(88.5% 0.021 232.2)
-
Step 300
300
#A8C6D6
oklch(81% 0.039 231.2)
-
Step 400
400
#78A8C1
oklch(70.6% 0.063 231.5)
-
Step 500
500
#5392B1
oklch(63% 0.08 231.3)
-
Step 600
600
#357C9D
oklch(55.6% 0.087 231.4)
-
Step 700
700
#276986
oklch(49.2% 0.08 230.6)
-
Step 800
800 (this color)
#285B73
oklch(44.7% 0.067 231.3)
-
Step 900
900
#214758
oklch(37.8% 0.052 229.5)
-
Step 950
950
#142934
oklch(26.9% 0.034 232.8)
#285B73 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) | #4F5A74 | 0.046 |
| Deuteranopia (no green cones) | #455273 | 0.040 |
| Tritanopia (no blue cones) | #006263 | 0.045 |
| Achromatopsia (no color) | #555555 | 0.067 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #285B73
#285B73
oklch(44.7% 0.067 231.3)
- #724931
#724931
oklch(44.6% 0.067 50.7)
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 #285B73, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- YInMn Blue #415A77 ΔE 0.028
- Petrol #005F6A ΔE 0.030
- Light Navy Blue #2E5A88 ΔE 0.037
- Deep Sea Blue #015482 ΔE 0.043
- Denim #3B638C ΔE 0.050
- Dark Aqua #05696B ΔE 0.051
- Deep Teal #00555A ΔE 0.052
- Light Navy #155084 ΔE 0.052
Use #285B73 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.