#228BAA
Closest named color: Blue NCS (#118AB2). oklch(59.4% 0.101 222.9), rgb(34, 139, 170).
Aa
Black text reads best on this color (5.34:1).
About this color
#228BAA is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 59%, its chroma 0.101 and its hue 223°. Its hue sits on the cool side of the wheel. The nearest named color is Blue NCS (#118AB2), ΔE 0.014 away. Black text reads best on it, at 5.34:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (59%) |
| Chroma | moderately saturated (0.101) |
| Temperature | cool |
| Nearest name | Blue NCS (#118AB2) |
| Black text | 5.34:1 |
| White text | 3.93:1 |
Values
| HEX | #228BAA |
| RGB | rgb(34, 139, 170) |
| HSL | hsl(194, 67%, 40%) |
| OKLCH | oklch(59.4% 0.101 222.9) |
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 #228BAA | 3.93:1 | AA large text | Lc -71.8 | Content text, not long reading |
| Black text on #228BAA | 5.34:1 | AA | Lc 37.8 | Non-text elements, placeholder text |
| #228BAA text on white | 3.93:1 | AA large text | Lc 66.3 | Content text, not long reading |
| #228BAA text on black | 5.34:1 | AA | Lc -35.3 | 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
#F1F6F9
oklch(97% 0.007 233.6)
-
Step 100
100
#E0ECF1
oklch(93.6% 0.015 224.5)
-
Step 200
200
#C7DEE6
oklch(88.6% 0.027 220.7)
-
Step 300
300
#9EC8D8
oklch(80.8% 0.05 223.1)
-
Step 400
400
#66ACC5
oklch(70.8% 0.079 223.1)
-
Step 500
500 (this color)
#228BAA
oklch(59.4% 0.101 222.9)
-
Step 600
600
#00809F
oklch(55.6% 0.103 222.6)
-
Step 700
700
#006B86
oklch(49% 0.091 223.1)
-
Step 800
800
#00586E
oklch(42.7% 0.079 222.3)
-
Step 900
900
#0A495B
oklch(37.7% 0.066 222.9)
-
Step 950
950
#0A2B35
oklch(27% 0.042 221.8)
#228BAA 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) | #7988AC | 0.080 |
| Deuteranopia (no green cones) | #677BAA | 0.070 |
| Tritanopia (no blue cones) | #009595 | 0.051 |
| Achromatopsia (no color) | #808080 | 0.101 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #228BAA
#228BAA
oklch(59.4% 0.101 222.9)
- #B0694C
#B0694C
oklch(59.3% 0.101 42.7)
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 #228BAA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blue NCS #118AB2 ΔE 0.014
- Teal Blue #01889F ΔE 0.022
- Steel Blue #4682B4 ΔE 0.040
- Cool Blue #4984B8 ΔE 0.042
- Off Blue #5684AE ΔE 0.043
- Dusty Blue #5A86AD ΔE 0.044
- Teal Green #0A9396 ΔE 0.046
- Cerulean #457B9D ΔE 0.047
Use #228BAA 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.