#227ABA
Closest named color: Windows Blue (#3778BF). oklch(56% 0.127 245.5), rgb(34, 122, 186).
Aa
White text reads best on this color (4.60:1).
About this color
#227ABA is a medium-dark, moderately saturated blue. In OKLCH its lightness is 56%, its chroma 0.127 and its hue 246°. Its hue sits on the cool side of the wheel. The nearest named color is Windows Blue (#3778BF), ΔE 0.017 away. White text reads best on it, at 4.60:1.
| Hue family | Blues |
| Lightness | medium-dark (56%) |
| Chroma | moderately saturated (0.127) |
| Temperature | cool |
| Nearest name | Windows Blue (#3778BF) |
| Black text | 4.56:1 |
| White text | 4.60:1 |
Values
| HEX | #227ABA |
| RGB | rgb(34, 122, 186) |
| HSL | hsl(205, 69%, 43%) |
| OKLCH | oklch(56% 0.127 245.5) |
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 #227ABA | 4.60:1 | AA | Lc -77.0 | Fine for body text |
| Black text on #227ABA | 4.56:1 | AA | Lc 32.5 | Non-text elements, placeholder text |
| #227ABA text on white | 4.60:1 | AA | Lc 71.6 | Content text, not long reading |
| #227ABA text on black | 4.56:1 | AA | Lc -30.1 | 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 600.
-
Step 50
50
#F1F6FA
oklch(97.1% 0.008 241.7)
-
Step 100
100
#E1EBF5
oklch(93.5% 0.017 248)
-
Step 200
200
#C9DCED
oklch(88.6% 0.031 245.1)
-
Step 300
300
#A3C5E4
oklch(80.9% 0.057 246.1)
-
Step 400
400
#6FA7D6
oklch(70.8% 0.091 244.9)
-
Step 500
500
#4590CC
oklch(63.2% 0.117 245.4)
-
Step 600
600 (this color)
#227ABA
oklch(56% 0.127 245.5)
-
Step 700
700
#10659F
oklch(49% 0.119 245.7)
-
Step 800
800
#135381
oklch(42.8% 0.098 245.5)
-
Step 900
900
#194567
oklch(37.7% 0.076 245.2)
-
Step 950
950
#10283D
oklch(26.9% 0.05 247.3)
#227ABA 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) | #5C7DBD | 0.052 |
| Deuteranopia (no green cones) | #466FB9 | 0.037 |
| Tritanopia (no blue cones) | #008A91 | 0.091 |
| Achromatopsia (no color) | #757575 | 0.127 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #227ABA
#227ABA
oklch(56% 0.127 245.5)
- #A56300
#A56300
oklch(56.1% 0.125 66)
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 #227ABA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Windows Blue #3778BF ΔE 0.017
- Nice Blue #107AB0 ΔE 0.018
- Flat Blue #3C73A8 ΔE 0.032
- Steel Blue #4682B4 ΔE 0.039
- Water Blue #0E87CC ΔE 0.041
- Cool Blue #4984B8 ΔE 0.044
- Mid Blue #276AB3 ΔE 0.045
- Muted Blue #3B719F ΔE 0.045
Use #227ABA 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.