#255BC2
Closest named color: Mid Blue (#276AB3). oklch(49.7% 0.172 261.7), rgb(37, 91, 194).
Aa
White text reads best on this color (6.26:1).
About this color
#255BC2 is a medium-dark, vivid blue. In OKLCH its lightness is 50%, its chroma 0.172 and its hue 262°. Its hue sits on the cool side of the wheel. The nearest named color is Mid Blue (#276AB3), ΔE 0.050 away. White text reads best on it, at 6.26:1.
| Hue family | Blues |
| Lightness | medium-dark (50%) |
| Chroma | vivid (0.172) |
| Temperature | cool |
| Nearest name | Mid Blue (#276AB3) |
| Black text | 3.35:1 |
| White text | 6.26:1 |
Values
| HEX | #255BC2 |
| RGB | rgb(37, 91, 194) |
| HSL | hsl(219, 68%, 45%) |
| OKLCH | oklch(49.7% 0.172 261.7) |
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 #255BC2 | 6.26:1 | AA | Lc -85.8 | Fine for body text |
| Black text on #255BC2 | 3.35:1 | AA large text | Lc 23.4 | Dividers and decoration only |
| #255BC2 text on white | 6.26:1 | AA | Lc 80.6 | Fine for body text |
| #255BC2 text on black | 3.35:1 | AA large text | Lc -21.2 | 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
#F1F6FD
oklch(97.1% 0.011 256.7)
-
Step 100
100
#E1EAFA
oklch(93.5% 0.024 262.1)
-
Step 200
200
#C9DAF8
oklch(88.5% 0.045 261.9)
-
Step 300
300
#A3C1F7
oklch(80.8% 0.084 262)
-
Step 400
400
#729FF3
oklch(70.6% 0.133 262.1)
-
Step 500
500
#4D85EF
oklch(63.1% 0.17 261.8)
-
Step 600
600
#306CDD
oklch(55.6% 0.184 261.6)
-
Step 700
700 (this color)
#255BC2
oklch(49.7% 0.172 261.7)
-
Step 800
800
#1F499B
oklch(42.6% 0.142 261.9)
-
Step 900
900
#1E3E7B
oklch(37.6% 0.111 261.8)
-
Step 950
950
#122548
oklch(27% 0.07 261.5)
#255BC2 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) | #0868C6 | 0.033 |
| Deuteranopia (no green cones) | #005AC0 | 0.017 |
| Tritanopia (no blue cones) | #007485 | 0.133 |
| Achromatopsia (no color) | #606060 | 0.172 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #255BC2
#255BC2
oklch(49.7% 0.172 261.7)
- #7F5B00
#7F5B00
oklch(49.6% 0.102 81.7)
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 #255BC2, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mid Blue #276AB3 ΔE 0.050
- Warm Blue #4B57DB ΔE 0.056
- Blue Blue #2242C7 ΔE 0.060
- Azul #1D5DEC ΔE 0.065
- Royal Blue #4169E1 ΔE 0.067
- French Blue #436BAD ΔE 0.067
- Iris #6258C4 ΔE 0.071
- Neon Blue #4361EE ΔE 0.077
Use #255BC2 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.