#2258BB
Closest named color: Mid Blue (#276AB3). oklch(48.4% 0.167 261.3), rgb(34, 88, 187).
Aa
White text reads best on this color (6.60:1).
About this color
#2258BB is a medium-dark, vivid blue. In OKLCH its lightness is 48%, its chroma 0.167 and its hue 261°. Its hue sits on the cool side of the wheel. The nearest named color is Mid Blue (#276AB3), ΔE 0.053 away. White text reads best on it, at 6.60:1.
| Hue family | Blues |
| Lightness | medium-dark (48%) |
| Chroma | vivid (0.167) |
| Temperature | cool |
| Nearest name | Mid Blue (#276AB3) |
| Black text | 3.18:1 |
| White text | 6.60:1 |
Values
| HEX | #2258BB |
| RGB | rgb(34, 88, 187) |
| HSL | hsl(219, 69%, 43%) |
| OKLCH | oklch(48.4% 0.167 261.3) |
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 #2258BB | 6.60:1 | AA | Lc -87.2 | Fine for body text |
| Black text on #2258BB | 3.18:1 | AA large text | Lc 21.9 | Dividers and decoration only |
| #2258BB text on white | 6.60:1 | AA | Lc 82.1 | Fine for body text |
| #2258BB text on black | 3.18:1 | AA large text | Lc -19.8 | 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
#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
#A4C2F5
oklch(81% 0.08 260.9)
-
Step 400
400
#72A0F1
oklch(70.7% 0.129 261.1)
-
Step 500
500
#4D86EC
oklch(63.2% 0.165 261.1)
-
Step 600
600
#316DDA
oklch(55.7% 0.179 261.1)
-
Step 700
700 (this color)
#2258BB
oklch(48.4% 0.167 261.3)
-
Step 800
800
#1F4A99
oklch(42.7% 0.138 261.3)
-
Step 900
900
#1F3F7A
oklch(37.8% 0.108 261.4)
-
Step 950
950
#122547
oklch(26.9% 0.068 261.1)
#2258BB 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) | #0B64BF | 0.031 |
| Deuteranopia (no green cones) | #0056B9 | 0.017 |
| Tritanopia (no blue cones) | #007081 | 0.128 |
| Achromatopsia (no color) | #5D5D5D | 0.167 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2258BB
#2258BB
oklch(48.4% 0.167 261.3)
- #7B5800
#7B5800
oklch(48.5% 0.1 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 #2258BB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mid Blue #276AB3 ΔE 0.053
- Blue Blue #2242C7 ΔE 0.055
- Warm Blue #4B57DB ΔE 0.066
- French Blue #436BAD ΔE 0.070
- Denim Blue #3B5B92 ΔE 0.070
- Dusk Blue #26538D ΔE 0.074
- Majorelle Blue #3F37C9 ΔE 0.076
- Azul #1D5DEC ΔE 0.077
Use #2258BB 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.