#285CA5
Closest named color: Denim Blue (#3B5B92). oklch(47.9% 0.13 257.5), rgb(40, 92, 165).
Aa
White text reads best on this color (6.63:1).
About this color
#285CA5 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 48%, its chroma 0.130 and its hue 258°. Its hue sits on the cool side of the wheel. The nearest named color is Denim Blue (#3B5B92), ΔE 0.034 away. White text reads best on it, at 6.63:1.
| Hue family | Blues |
| Lightness | medium-dark (48%) |
| Chroma | moderately saturated (0.130) |
| Temperature | cool |
| Nearest name | Denim Blue (#3B5B92) |
| Black text | 3.16:1 |
| White text | 6.63:1 |
Values
| HEX | #285CA5 |
| RGB | rgb(40, 92, 165) |
| HSL | hsl(215, 61%, 40%) |
| OKLCH | oklch(47.9% 0.13 257.5) |
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 #285CA5 | 6.63:1 | AA | Lc -87.5 | Fine for body text |
| Black text on #285CA5 | 3.16:1 | AA large text | Lc 21.6 | Dividers and decoration only |
| #285CA5 text on white | 6.63:1 | AA | Lc 82.4 | Fine for body text |
| #285CA5 text on black | 3.16:1 | AA large text | Lc -19.5 | 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 700.
-
Step 50
50
#F2F6FB
oklch(97.2% 0.008 253.9)
-
Step 100
100
#E2EBF6
oklch(93.7% 0.018 253.3)
-
Step 200
200
#CBDAF1
oklch(88.4% 0.036 258.9)
-
Step 300
300
#A7C3EA
oklch(81% 0.063 256.7)
-
Step 400
400
#78A2DF
oklch(70.6% 0.101 257.6)
-
Step 500
500
#558AD6
oklch(63.1% 0.128 257.5)
-
Step 600
600
#3972C3
oklch(55.5% 0.14 257.6)
-
Step 700
700 (this color)
#285CA5
oklch(47.9% 0.13 257.5)
-
Step 800
800
#254E89
oklch(42.6% 0.108 257.8)
-
Step 900
900
#23426D
oklch(37.8% 0.083 257)
-
Step 950
950
#152740
oklch(27.1% 0.053 256.9)
#285CA5 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) | #3763A8 | 0.026 |
| Deuteranopia (no green cones) | #2057A4 | 0.016 |
| Tritanopia (no blue cones) | #006D78 | 0.101 |
| Achromatopsia (no color) | #5C5C5C | 0.130 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #285CA5
#285CA5
oklch(47.9% 0.13 257.5)
- #7C5500
#7C5500
oklch(48% 0.1 77.9)
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 #285CA5, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Denim Blue #3B5B92 ΔE 0.034
- Mid Blue #276AB3 ΔE 0.042
- Dusky Blue #475F94 ΔE 0.044
- Dusk Blue #26538D ΔE 0.044
- Light Navy Blue #2E5A88 ΔE 0.047
- Peacock Blue #016795 ΔE 0.047
- Denim #3B638C ΔE 0.052
- French Blue #436BAD ΔE 0.054
Use #285CA5 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.