#228BEB
Closest named color: Dark Sky Blue (#448EE4). oklch(62.9% 0.17 251.4), rgb(34, 139, 235).
Aa
Black text reads best on this color (5.96:1).
About this color
#228BEB is a medium-light, vivid blue. In OKLCH its lightness is 63%, its chroma 0.170 and its hue 251°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Sky Blue (#448EE4), ΔE 0.025 away. Black text reads best on it, at 5.96:1.
| Hue family | Blues |
| Lightness | medium-light (63%) |
| Chroma | vivid (0.170) |
| Temperature | cool |
| Nearest name | Dark Sky Blue (#448EE4) |
| Black text | 5.96:1 |
| White text | 3.52:1 |
Values
| HEX | #228BEB |
| RGB | rgb(34, 139, 235) |
| HSL | hsl(209, 83%, 53%) |
| OKLCH | oklch(62.9% 0.17 251.4) |
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 #228BEB | 3.52:1 | AA large text | Lc -67.7 | Content text, not long reading |
| Black text on #228BEB | 5.96:1 | AA | Lc 41.8 | Non-text elements, placeholder text |
| #228BEB text on white | 3.52:1 | AA large text | Lc 62.3 | Content text, not long reading |
| #228BEB text on black | 5.96:1 | AA | Lc -39.4 | Non-text elements, placeholder text |
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 500.
-
Step 50
50
#F0F6FD
oklch(97.1% 0.011 252.1)
-
Step 100
100
#DFEBFA
oklch(93.6% 0.024 254)
-
Step 200
200
#C3DCF7
oklch(88.5% 0.046 250.4)
-
Step 300
300
#99C5F5
oklch(80.9% 0.083 251)
-
Step 400
400
#5DA5F1
oklch(70.8% 0.133 251.4)
-
Step 500
500 (this color)
#228BEB
oklch(62.9% 0.17 251.4)
-
Step 600
600
#0074CF
oklch(55.5% 0.165 251.7)
-
Step 700
700
#0062AF
oklch(49.2% 0.144 251.3)
-
Step 800
800
#005091
oklch(42.8% 0.126 251.5)
-
Step 900
900
#00427A
oklch(37.7% 0.112 251.7)
-
Step 950
950
#062747
oklch(26.9% 0.07 251.5)
#228BEB 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) | #5B92EF | 0.048 |
| Deuteranopia (no green cones) | #3780E9 | 0.029 |
| Tritanopia (no blue cones) | #00A2AF | 0.125 |
| Achromatopsia (no color) | #888888 | 0.170 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #228BEB
#228BEB
oklch(62.9% 0.17 251.4)
- #BB7900
#BB7900
oklch(63% 0.135 71.5)
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 #228BEB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Sky Blue #448EE4 ΔE 0.025
- Dodger Blue #1E90FF ΔE 0.031
- Chefchaouen Blue #4895EF ΔE 0.039
- Water Blue #0E87CC ΔE 0.048
- Soft Blue #6488EA ΔE 0.050
- Clear Blue #247AFD ΔE 0.054
- Cornflower Blue #6495ED ΔE 0.060
- Cornflower #6A79F7 ΔE 0.073
Use #228BEB 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.