#285FBA
Closest named color: Mid Blue (#276AB3). oklch(50.1% 0.155 260), rgb(40, 95, 186).
Aa
White text reads best on this color (6.11:1).
About this color
#285FBA is a medium-dark, vivid blue. In OKLCH its lightness is 50%, its chroma 0.155 and its hue 260°. Its hue sits on the cool side of the wheel. The nearest named color is Mid Blue (#276AB3), ΔE 0.034 away. White text reads best on it, at 6.11:1.
| Hue family | Blues |
| Lightness | medium-dark (50%) |
| Chroma | vivid (0.155) |
| Temperature | cool |
| Nearest name | Mid Blue (#276AB3) |
| Black text | 3.43:1 |
| White text | 6.11:1 |
Values
| HEX | #285FBA |
| RGB | rgb(40, 95, 186) |
| HSL | hsl(217, 65%, 44%) |
| OKLCH | oklch(50.1% 0.155 260) |
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 #285FBA | 6.11:1 | AA | Lc -85.2 | Fine for body text |
| Black text on #285FBA | 3.43:1 | AA large text | Lc 24.0 | Dividers and decoration only |
| #285FBA text on white | 6.11:1 | AA | Lc 80.1 | Fine for body text |
| #285FBA text on black | 3.43:1 | AA large text | Lc -21.8 | 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
#C9DAF5
oklch(88.4% 0.042 259.6)
-
Step 300
300
#A5C2F2
oklch(80.9% 0.075 260.4)
-
Step 400
400
#74A1EB
oklch(70.7% 0.12 260)
-
Step 500
500
#4F87E5
oklch(63% 0.154 260.1)
-
Step 600
600
#326FD3
oklch(55.6% 0.167 259.9)
-
Step 700
700 (this color)
#285FBA
oklch(50.1% 0.155 260)
-
Step 800
800
#204C94
oklch(42.8% 0.128 259.8)
-
Step 900
900
#1F4076
oklch(37.7% 0.1 259.8)
-
Step 950
950
#132645
oklch(27.1% 0.063 259.7)
#285FBA 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) | #2A69BD | 0.027 |
| Deuteranopia (no green cones) | #005CB8 | 0.022 |
| Tritanopia (no blue cones) | #007583 | 0.121 |
| Achromatopsia (no color) | #626262 | 0.155 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #285FBA
#285FBA
oklch(50.1% 0.155 260)
- #825B00
#825B00
oklch(50% 0.104 79.6)
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 #285FBA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mid Blue #276AB3 ΔE 0.034
- French Blue #436BAD ΔE 0.051
- Denim Blue #3B5B92 ΔE 0.064
- Warm Blue #4B57DB ΔE 0.066
- Dusky Blue #475F94 ΔE 0.066
- Peacock Blue #016795 ΔE 0.070
- Iris #6258C4 ΔE 0.070
- Royal Blue #4169E1 ΔE 0.071
Use #285FBA 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.