#238CA6
Closest named color: Teal Blue (#01889F). oklch(59.4% 0.098 218.9), rgb(35, 140, 166).
Aa
Black text reads best on this color (5.37:1).
About this color
#238CA6 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 59%, its chroma 0.098 and its hue 219°. Its hue sits on the cool side of the wheel. The nearest named color is Teal Blue (#01889F), ΔE 0.019 away. Black text reads best on it, at 5.37:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (59%) |
| Chroma | moderately saturated (0.098) |
| Temperature | cool |
| Nearest name | Teal Blue (#01889F) |
| Black text | 5.37:1 |
| White text | 3.90:1 |
Values
| HEX | #238CA6 |
| RGB | rgb(35, 140, 166) |
| HSL | hsl(192, 65%, 39%) |
| OKLCH | oklch(59.4% 0.098 218.9) |
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 #238CA6 | 3.90:1 | AA large text | Lc -71.6 | Content text, not long reading |
| Black text on #238CA6 | 5.37:1 | AA | Lc 38.0 | Non-text elements, placeholder text |
| #238CA6 text on white | 3.90:1 | AA large text | Lc 66.1 | Content text, not long reading |
| #238CA6 text on black | 5.37:1 | AA | Lc -35.5 | 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
#E0ECF0
oklch(93.5% 0.014 219.6)
-
Step 200
200
#C7DEE5
oklch(88.6% 0.026 218)
-
Step 300
300
#9FC9D6
oklch(81% 0.048 218.7)
-
Step 400
400
#66ACC1
oklch(70.6% 0.077 219.2)
-
Step 500
500 (this color)
#238CA6
oklch(59.4% 0.098 218.9)
-
Step 600
600
#00819B
oklch(55.7% 0.1 218.5)
-
Step 700
700
#006C83
oklch(49.1% 0.089 219.3)
-
Step 800
800
#00586B
oklch(42.5% 0.077 219.1)
-
Step 900
900
#0A4958
oklch(37.6% 0.064 218.8)
-
Step 950
950
#0A2B34
oklch(27% 0.041 219.4)
#238CA6 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) | #7C88A7 | 0.083 |
| Deuteranopia (no green cones) | #6A7BA6 | 0.074 |
| Tritanopia (no blue cones) | #009594 | 0.045 |
| Achromatopsia (no color) | #818181 | 0.098 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #238CA6
#238CA6
oklch(59.4% 0.098 218.9)
- #B06952
#B06952
oklch(59.4% 0.098 38.7)
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 #238CA6, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Teal Blue #01889F ΔE 0.019
- Blue NCS #118AB2 ΔE 0.022
- Teal Green #0A9396 ΔE 0.038
- Dark Cyan #008B8B ΔE 0.045
- Steel Blue #4682B4 ΔE 0.046
- Off Blue #5684AE ΔE 0.047
- Dusty Blue #5A86AD ΔE 0.047
- Cool Blue #4984B8 ΔE 0.049
Use #238CA6 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.