#285177
Closest named color: Deep Sea Blue (#015482). oklch(42.4% 0.079 248.6), rgb(40, 81, 119).
Aa
White text reads best on this color (8.28:1).
About this color
#285177 is a dark, moderately saturated blue. In OKLCH its lightness is 42%, its chroma 0.079 and its hue 249°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Sea Blue (#015482), ΔE 0.026 away. White text reads best on it, at 8.28:1.
| Hue family | Blues |
| Lightness | dark (42%) |
| Chroma | moderately saturated (0.079) |
| Temperature | cool |
| Nearest name | Deep Sea Blue (#015482) |
| Black text | 2.53:1 |
| White text | 8.28:1 |
Values
| HEX | #285177 |
| RGB | rgb(40, 81, 119) |
| HSL | hsl(209, 50%, 31%) |
| OKLCH | oklch(42.4% 0.079 248.6) |
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 #285177 | 8.28:1 | AAA | Lc -93.1 | Preferred for body text |
| Black text on #285177 | 2.53:1 | Fails | Lc 15.6 | Dividers and decoration only |
| #285177 text on white | 8.28:1 | AAA | Lc 88.4 | Fine for body text |
| #285177 text on black | 2.53:1 | Fails | Lc -13.7 | 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
#E3EBF3
oklch(93.6% 0.014 248)
-
Step 200
200
#CDDBEA
oklch(88.5% 0.026 250)
-
Step 300
300
#AAC4DE
oklch(80.9% 0.046 248.4)
-
Step 400
400
#7CA5CD
oklch(70.7% 0.074 248.3)
-
Step 500
500
#5A8EC0
oklch(63.1% 0.094 248.6)
-
Step 600
600
#3F77AC
oklch(55.5% 0.102 249)
-
Step 700
700
#306494
oklch(49% 0.095 248.7)
-
Step 800
800 (this color)
#285177
oklch(42.4% 0.079 248.6)
-
Step 900
900
#264461
oklch(37.7% 0.062 249)
-
Step 950
950
#172839
oklch(27.1% 0.039 249.5)
#285177 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) | #405279 | 0.029 |
| Deuteranopia (no green cones) | #364B76 | 0.022 |
| Tritanopia (no blue cones) | #005A5E | 0.062 |
| Achromatopsia (no color) | #4E4E4E | 0.079 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #285177
#285177
oklch(42.4% 0.079 248.6)
- #6A4517
#6A4517
oklch(42.4% 0.079 68.2)
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 #285177, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Sea Blue #015482 ΔE 0.026
- Light Navy #155084 ΔE 0.026
- Dusk Blue #26538D ΔE 0.036
- Light Navy Blue #2E5A88 ΔE 0.037
- YInMn Blue #415A77 ΔE 0.043
- Dark Grey Blue #29465B ΔE 0.052
- Twilight Blue #0A437A ΔE 0.053
- Dusk #4E5481 ΔE 0.053
Use #285177 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.