#2255A7
Closest named color: Dusk Blue (#26538D). oklch(46.3% 0.143 259.6), rgb(34, 85, 167).
Aa
White text reads best on this color (7.17:1).
About this color
#2255A7 is a medium-dark, vivid blue. In OKLCH its lightness is 46%, its chroma 0.143 and its hue 260°. Its hue sits on the cool side of the wheel. The nearest named color is Dusk Blue (#26538D), ΔE 0.042 away. White text reads best on it, at 7.17:1.
| Hue family | Blues |
| Lightness | medium-dark (46%) |
| Chroma | vivid (0.143) |
| Temperature | cool |
| Nearest name | Dusk Blue (#26538D) |
| Black text | 2.92:1 |
| White text | 7.17:1 |
Values
| HEX | #2255A7 |
| RGB | rgb(34, 85, 167) |
| HSL | hsl(217, 66%, 39%) |
| OKLCH | oklch(46.3% 0.143 259.6) |
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 #2255A7 | 7.17:1 | AAA | Lc -89.4 | Fine for body text |
| Black text on #2255A7 | 2.92:1 | Fails | Lc 19.6 | Dividers and decoration only |
| #2255A7 text on white | 7.17:1 | AAA | Lc 84.5 | Fine for body text |
| #2255A7 text on black | 2.92:1 | Fails | Lc -17.5 | 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
#F2F6FC
oklch(97.2% 0.009 258.3)
-
Step 100
100
#E2EAF8
oklch(93.5% 0.021 261.8)
-
Step 200
200
#CADAF3
oklch(88.4% 0.039 259.3)
-
Step 300
300
#A7C2EE
oklch(80.9% 0.069 260.1)
-
Step 400
400
#77A1E5
oklch(70.6% 0.11 259.7)
-
Step 500
500
#5388DE
oklch(63% 0.142 259.6)
-
Step 600
600
#3870CC
oklch(55.6% 0.154 259.8)
-
Step 700
700 (this color)
#2255A7
oklch(46.3% 0.143 259.6)
-
Step 800
800
#244D8F
oklch(42.8% 0.119 259.5)
-
Step 900
900
#224072
oklch(37.6% 0.093 260)
-
Step 950
950
#142643
oklch(27% 0.059 259.5)
#2255A7 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) | #255EAA | 0.025 |
| Deuteranopia (no green cones) | #0052A5 | 0.020 |
| Tritanopia (no blue cones) | #006976 | 0.111 |
| Achromatopsia (no color) | #575757 | 0.143 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2255A7
#2255A7
oklch(46.3% 0.143 259.6)
- #755100
#755100
oklch(46.2% 0.096 79)
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 #2255A7, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusk Blue #26538D ΔE 0.042
- Denim Blue #3B5B92 ΔE 0.047
- Cobalt #1E488F ΔE 0.051
- Light Navy Blue #2E5A88 ΔE 0.056
- Light Navy #155084 ΔE 0.059
- Mid Blue #276AB3 ΔE 0.060
- Dusky Blue #475F94 ΔE 0.061
- Blueberry #464196 ΔE 0.064
Use #2255A7 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.