#285B9E
Closest named color: Denim Blue (#3B5B92). oklch(47.2% 0.122 256.4), rgb(40, 91, 158).
Aa
White text reads best on this color (6.81:1).
About this color
#285B9E is a medium-dark, moderately saturated blue. In OKLCH its lightness is 47%, its chroma 0.122 and its hue 256°. Its hue sits on the cool side of the wheel. The nearest named color is Denim Blue (#3B5B92), ΔE 0.026 away. White text reads best on it, at 6.81:1.
| Hue family | Blues |
| Lightness | medium-dark (47%) |
| Chroma | moderately saturated (0.122) |
| Temperature | cool |
| Nearest name | Denim Blue (#3B5B92) |
| Black text | 3.08:1 |
| White text | 6.81:1 |
Values
| HEX | #285B9E |
| RGB | rgb(40, 91, 158) |
| HSL | hsl(214, 60%, 39%) |
| OKLCH | oklch(47.2% 0.122 256.4) |
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 #285B9E | 6.81:1 | AA | Lc -88.2 | Fine for body text |
| Black text on #285B9E | 3.08:1 | AA large text | Lc 20.8 | Dividers and decoration only |
| #285B9E text on white | 6.81:1 | AA | Lc 83.2 | Fine for body text |
| #285B9E text on black | 3.08:1 | AA large text | Lc -18.7 | 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 700.
-
Step 50
50
#F2F6FB
oklch(97.2% 0.008 253.9)
-
Step 100
100
#E3EBF5
oklch(93.7% 0.016 253.9)
-
Step 200
200
#CCDBEF
oklch(88.6% 0.032 255.6)
-
Step 300
300
#A8C3E7
oklch(80.9% 0.059 255.7)
-
Step 400
400
#7AA3DB
oklch(70.8% 0.094 256.4)
-
Step 500
500
#578BD1
oklch(63.1% 0.12 256.2)
-
Step 600
600
#3C74BE
oklch(55.7% 0.13 256.2)
-
Step 700
700 (this color)
#285B9E
oklch(47.2% 0.122 256.4)
-
Step 800
800
#274F85
oklch(42.7% 0.101 256.6)
-
Step 900
900
#24426A
oklch(37.6% 0.078 256.2)
-
Step 950
950
#16273E
oklch(27% 0.049 256.3)
#285B9E 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) | #3B61A1 | 0.027 |
| Deuteranopia (no green cones) | #27569D | 0.014 |
| Tritanopia (no blue cones) | #006B75 | 0.094 |
| Achromatopsia (no color) | #5B5B5B | 0.122 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #285B9E
#285B9E
oklch(47.2% 0.122 256.4)
- #7A5200
#7A5200
oklch(47.1% 0.099 76.3)
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 #285B9E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Denim Blue #3B5B92 ΔE 0.026
- Dusk Blue #26538D ΔE 0.034
- Light Navy Blue #2E5A88 ΔE 0.036
- Dusky Blue #475F94 ΔE 0.040
- Peacock Blue #016795 ΔE 0.042
- Denim #3B638C ΔE 0.046
- Mid Blue #276AB3 ΔE 0.050
- Twilight #4E518B ΔE 0.053
Use #285B9E 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.