#285C78
Closest named color: YInMn Blue (#415A77). oklch(45.2% 0.072 235), rgb(40, 92, 120).
Aa
White text reads best on this color (7.26:1).
About this color
#285C78 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 45%, its chroma 0.072 and its hue 235°. Its hue sits on the cool side of the wheel. The nearest named color is YInMn Blue (#415A77), ΔE 0.026 away. White text reads best on it, at 7.26:1.
| Hue family | Blues |
| Lightness | medium-dark (45%) |
| Chroma | moderately saturated (0.072) |
| Temperature | cool |
| Nearest name | YInMn Blue (#415A77) |
| Black text | 2.89:1 |
| White text | 7.26:1 |
Values
| HEX | #285C78 |
| RGB | rgb(40, 92, 120) |
| HSL | hsl(201, 50%, 31%) |
| OKLCH | oklch(45.2% 0.072 235) |
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 #285C78 | 7.26:1 | AAA | Lc -89.9 | Fine for body text |
| Black text on #285C78 | 2.89:1 | Fails | Lc 19.0 | Dividers and decoration only |
| #285C78 text on white | 7.26:1 | AAA | Lc 85.0 | Fine for body text |
| #285C78 text on black | 2.89:1 | Fails | Lc -17.0 | 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
#F2F6F9
oklch(97.1% 0.006 239.8)
-
Step 100
100
#E2EBF1
oklch(93.5% 0.013 236.6)
-
Step 200
200
#CBDCE7
oklch(88.5% 0.024 236)
-
Step 300
300
#A7C6D8
oklch(81% 0.042 233.5)
-
Step 400
400
#77A8C5
oklch(70.7% 0.067 235)
-
Step 500
500
#5292B6
oklch(63.2% 0.085 235)
-
Step 600
600
#337CA2
oklch(55.7% 0.093 234.7)
-
Step 700
700
#24688B
oklch(49.1% 0.087 235.2)
-
Step 800
800 (this color)
#285C78
oklch(45.2% 0.072 235)
-
Step 900
900
#20465B
oklch(37.6% 0.056 235.2)
-
Step 950
950
#142935
oklch(26.9% 0.035 235.2)
#285C78 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) | #4F5B79 | 0.045 |
| Deuteranopia (no green cones) | #445378 | 0.039 |
| Tritanopia (no blue cones) | #006365 | 0.049 |
| Achromatopsia (no color) | #575757 | 0.072 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #285C78
#285C78
oklch(45.2% 0.072 235)
- #754B2D
#754B2D
oklch(45.4% 0.072 55.3)
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 #285C78, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- YInMn Blue #415A77 ΔE 0.026
- Light Navy Blue #2E5A88 ΔE 0.030
- Petrol #005F6A ΔE 0.035
- Deep Sea Blue #015482 ΔE 0.041
- Denim #3B638C ΔE 0.043
- Dusk Blue #26538D ΔE 0.049
- Light Navy #155084 ΔE 0.050
- Denim Blue #3B5B92 ΔE 0.050
Use #285C78 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.