#228BA8
Closest named color: Blue NCS (#118AB2). oklch(59.3% 0.1 221.4), rgb(34, 139, 168).
Aa
Black text reads best on this color (5.32:1).
About this color
#228BA8 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 59%, its chroma 0.100 and its hue 221°. Its hue sits on the cool side of the wheel. The nearest named color is Blue NCS (#118AB2), ΔE 0.017 away. Black text reads best on it, at 5.32:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (59%) |
| Chroma | moderately saturated (0.100) |
| Temperature | cool |
| Nearest name | Blue NCS (#118AB2) |
| Black text | 5.32:1 |
| White text | 3.94:1 |
Values
| HEX | #228BA8 |
| RGB | rgb(34, 139, 168) |
| HSL | hsl(193, 66%, 40%) |
| OKLCH | oklch(59.3% 0.1 221.4) |
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 #228BA8 | 3.94:1 | AA large text | Lc -71.9 | Content text, not long reading |
| Black text on #228BA8 | 5.32:1 | AA | Lc 37.7 | Non-text elements, placeholder text |
| #228BA8 text on white | 3.94:1 | AA large text | Lc 66.4 | Content text, not long reading |
| #228BA8 text on black | 5.32:1 | AA | Lc -35.2 | 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
#F1F6F8
oklch(97% 0.006 223.5)
-
Step 100
100
#E1ECF0
oklch(93.6% 0.013 221.4)
-
Step 200
200
#C8DDE5
oklch(88.4% 0.025 222.6)
-
Step 300
300
#A2C8D5
oklch(81% 0.044 220.7)
-
Step 400
400
#6CABC0
oklch(70.6% 0.072 221.2)
-
Step 500
500
#3E96B1
oklch(63.1% 0.092 221.4)
-
Step 600
600 (this color)
#228BA8
oklch(59.3% 0.1 221.4)
-
Step 700
700
#006C85
oklch(49.2% 0.09 221.2)
-
Step 800
800
#05586D
oklch(42.7% 0.077 221.8)
-
Step 900
900
#134958
oklch(37.8% 0.06 220.4)
-
Step 950
950
#0E2B34
oklch(27.2% 0.038 221.3)
#228BA8 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) | #7A87AA | 0.082 |
| Deuteranopia (no green cones) | #687BA8 | 0.071 |
| Tritanopia (no blue cones) | #009494 | 0.048 |
| Achromatopsia (no color) | #808080 | 0.100 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #228BA8
#228BA8
oklch(59.3% 0.1 221.4)
- #B0694E
#B0694E
oklch(59.3% 0.1 41.4)
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 #228BA8, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blue NCS #118AB2 ΔE 0.017
- Teal Blue #01889F ΔE 0.019
- Steel Blue #4682B4 ΔE 0.042
- Teal Green #0A9396 ΔE 0.043
- Off Blue #5684AE ΔE 0.044
- Cool Blue #4984B8 ΔE 0.045
- Dusty Blue #5A86AD ΔE 0.046
- Cerulean #457B9D ΔE 0.047
Use #228BA8 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.