#285CB8
Closest named color: Mid Blue (#276AB3). oklch(49.3% 0.156 260.8), rgb(40, 92, 184).
Aa
White text reads best on this color (6.33:1).
About this color
#285CB8 is a medium-dark, vivid blue. In OKLCH its lightness is 49%, its chroma 0.156 and its hue 261°. Its hue sits on the cool side of the wheel. The nearest named color is Mid Blue (#276AB3), ΔE 0.040 away. White text reads best on it, at 6.33:1.
| Hue family | Blues |
| Lightness | medium-dark (49%) |
| Chroma | vivid (0.156) |
| Temperature | cool |
| Nearest name | Mid Blue (#276AB3) |
| Black text | 3.31:1 |
| White text | 6.33:1 |
Values
| HEX | #285CB8 |
| RGB | rgb(40, 92, 184) |
| HSL | hsl(218, 64%, 44%) |
| OKLCH | oklch(49.3% 0.156 260.8) |
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 #285CB8 | 6.33:1 | AA | Lc -86.2 | Fine for body text |
| Black text on #285CB8 | 3.31:1 | AA large text | Lc 23.0 | Dividers and decoration only |
| #285CB8 text on white | 6.33:1 | AA | Lc 81.1 | Fine for body text |
| #285CB8 text on black | 3.31:1 | AA large text | Lc -20.8 | 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
#F2F6FC
oklch(97.2% 0.009 258.3)
-
Step 100
100
#E2EAF9
oklch(93.5% 0.022 263.2)
-
Step 200
200
#CADAF6
oklch(88.5% 0.042 261.7)
-
Step 300
300
#A5C2F2
oklch(80.9% 0.075 260.4)
-
Step 400
400
#75A0EC
oklch(70.6% 0.122 261.3)
-
Step 500
500
#5187E6
oklch(63.2% 0.155 260.9)
-
Step 600
600
#356ED4
oklch(55.6% 0.168 261)
-
Step 700
700 (this color)
#285CB8
oklch(49.3% 0.156 260.8)
-
Step 800
800
#224B94
oklch(42.6% 0.129 260.9)
-
Step 900
900
#214076
oklch(37.8% 0.1 260.7)
-
Step 950
950
#142645
oklch(27.1% 0.063 260.6)
#285CB8 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) | #2466BB | 0.026 |
| Deuteranopia (no green cones) | #0059B6 | 0.022 |
| Tritanopia (no blue cones) | #007281 | 0.121 |
| Achromatopsia (no color) | #5F5F5F | 0.156 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #285CB8
#285CB8
oklch(49.3% 0.156 260.8)
- #7E5A00
#7E5A00
oklch(49.3% 0.102 81.5)
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 #285CB8, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mid Blue #276AB3 ΔE 0.040
- French Blue #436BAD ΔE 0.057
- Denim Blue #3B5B92 ΔE 0.062
- Dusky Blue #475F94 ΔE 0.066
- Warm Blue #4B57DB ΔE 0.067
- Blue Blue #2242C7 ΔE 0.068
- Peacock Blue #016795 ΔE 0.071
- Dusk Blue #26538D ΔE 0.071
Use #285CB8 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.