#228FA1
Closest named color: Teal Blue (#01889F). oklch(60% 0.096 211.6), rgb(34, 143, 161).
Aa
Black text reads best on this color (5.51:1).
About this color
#228FA1 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 60%, its chroma 0.096 and its hue 212°. Its hue sits on the cool side of the wheel. The nearest named color is Teal Blue (#01889F), ΔE 0.024 away. Black text reads best on it, at 5.51:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (60%) |
| Chroma | moderately saturated (0.096) |
| Temperature | cool |
| Nearest name | Teal Blue (#01889F) |
| Black text | 5.51:1 |
| White text | 3.81:1 |
Values
| HEX | #228FA1 |
| RGB | rgb(34, 143, 161) |
| HSL | hsl(189, 65%, 38%) |
| OKLCH | oklch(60% 0.096 211.6) |
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 #228FA1 | 3.81:1 | AA large text | Lc -70.7 | Content text, not long reading |
| Black text on #228FA1 | 5.51:1 | AA | Lc 38.9 | Non-text elements, placeholder text |
| #228FA1 text on white | 3.81:1 | AA large text | Lc 65.2 | Content text, not long reading |
| #228FA1 text on black | 5.51:1 | AA | Lc -36.4 | 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
#F1F7F8
oklch(97.2% 0.007 208.8)
-
Step 100
100
#E0ECEF
oklch(93.5% 0.013 214.4)
-
Step 200
200
#C6DEE3
oklch(88.4% 0.026 211.6)
-
Step 300
300
#9EC9D2
oklch(80.8% 0.047 211.9)
-
Step 400
400
#65ADBC
oklch(70.6% 0.075 212.5)
-
Step 500
500 (this color)
#228FA1
oklch(60% 0.096 211.6)
-
Step 600
600
#008294
oklch(55.7% 0.097 211.6)
-
Step 700
700
#006D7C
oklch(49% 0.085 211.2)
-
Step 800
800
#005966
oklch(42.6% 0.074 211.8)
-
Step 900
900
#074A55
oklch(37.7% 0.063 212.3)
-
Step 950
950
#092C32
oklch(27.2% 0.04 211.2)
#228FA1 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) | #818AA2 | 0.089 |
| Deuteranopia (no green cones) | #707DA1 | 0.082 |
| Tritanopia (no blue cones) | #009694 | 0.034 |
| Achromatopsia (no color) | #838383 | 0.097 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #228FA1
#228FA1
oklch(60% 0.096 211.6)
- #B26A5C
#B26A5C
oklch(60% 0.095 31.8)
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 #228FA1, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Teal Blue #01889F ΔE 0.024
- Teal Green #0A9396 ΔE 0.025
- Blue NCS #118AB2 ΔE 0.034
- Dark Cyan #008B8B ΔE 0.037
- Sea #3C9992 ΔE 0.046
- Dusty Teal #4C9085 ΔE 0.049
- Blue Green #0F9B8E ΔE 0.054
- Dusty Blue #5A86AD ΔE 0.055
Use #228FA1 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.