#285FAB
Closest named color: Mid Blue (#276AB3). oklch(49% 0.135 257.3), rgb(40, 95, 171).
Aa
White text reads best on this color (6.33:1).
About this color
#285FAB is a medium-dark, moderately saturated blue. In OKLCH its lightness is 49%, its chroma 0.135 and its hue 257°. Its hue sits on the cool side of the wheel. The nearest named color is Mid Blue (#276AB3), ΔE 0.032 away. White text reads best on it, at 6.33:1.
| Hue family | Blues |
| Lightness | medium-dark (49%) |
| Chroma | moderately saturated (0.135) |
| Temperature | cool |
| Nearest name | Mid Blue (#276AB3) |
| Black text | 3.31:1 |
| White text | 6.33:1 |
Values
| HEX | #285FAB |
| RGB | rgb(40, 95, 171) |
| HSL | hsl(215, 62%, 41%) |
| OKLCH | oklch(49% 0.135 257.3) |
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 #285FAB | 6.33:1 | AA | Lc -86.3 | Fine for body text |
| Black text on #285FAB | 3.31:1 | AA large text | Lc 22.9 | Dividers and decoration only |
| #285FAB text on white | 6.33:1 | AA | Lc 81.1 | Fine for body text |
| #285FAB text on black | 3.31:1 | AA large text | Lc -20.7 | 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
#E2EBF7
oklch(93.7% 0.019 255.5)
-
Step 200
200
#CADBF2
oklch(88.6% 0.037 256)
-
Step 300
300
#A6C3EB
oklch(80.9% 0.065 256.5)
-
Step 400
400
#76A2E1
oklch(70.6% 0.105 257.4)
-
Step 500
500
#528AD9
oklch(63.1% 0.134 257.2)
-
Step 600
600
#3672C6
oklch(55.5% 0.145 257.4)
-
Step 700
700 (this color)
#285FAB
oklch(49% 0.135 257.3)
-
Step 800
800
#234E8B
oklch(42.7% 0.112 257.6)
-
Step 900
900
#21416F
oklch(37.6% 0.088 257.6)
-
Step 950
950
#142741
oklch(27.1% 0.055 256.6)
#285FAB 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) | #3966AE | 0.027 |
| Deuteranopia (no green cones) | #1F5AA9 | 0.017 |
| Tritanopia (no blue cones) | #00717C | 0.105 |
| Achromatopsia (no color) | #606060 | 0.135 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #285FAB
#285FAB
oklch(49% 0.135 257.3)
- #805700
#805700
oklch(48.9% 0.102 77.1)
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 #285FAB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mid Blue #276AB3 ΔE 0.032
- Denim Blue #3B5B92 ΔE 0.042
- French Blue #436BAD ΔE 0.046
- Dusky Blue #475F94 ΔE 0.047
- Peacock Blue #016795 ΔE 0.049
- Dusk Blue #26538D ΔE 0.056
- Denim #3B638C ΔE 0.056
- Light Navy Blue #2E5A88 ΔE 0.056
Use #285FAB 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.