#238FB1
Closest named color: Blue NCS (#118AB2). oklch(60.7% 0.105 224.5), rgb(35, 143, 177).
Aa
Black text reads best on this color (5.63:1).
About this color
#238FB1 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 61%, its chroma 0.105 and its hue 224°. 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 5.63:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (61%) |
| Chroma | moderately saturated (0.105) |
| Temperature | cool |
| Nearest name | Blue NCS (#118AB2) |
| Black text | 5.63:1 |
| White text | 3.72:1 |
Values
| HEX | #238FB1 |
| RGB | rgb(35, 143, 177) |
| HSL | hsl(194, 67%, 42%) |
| OKLCH | oklch(60.7% 0.105 224.5) |
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 #238FB1 | 3.72:1 | AA large text | Lc -69.9 | Content text, not long reading |
| Black text on #238FB1 | 5.63:1 | AA | Lc 39.7 | Non-text elements, placeholder text |
| #238FB1 text on white | 3.72:1 | AA large text | Lc 64.4 | Content text, not long reading |
| #238FB1 text on black | 5.63:1 | AA | Lc -37.2 | 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 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
#C6DEE7
oklch(88.6% 0.028 222.3)
-
Step 300
300
#9EC8DA
oklch(80.9% 0.051 225.9)
-
Step 400
400
#64ACC7
oklch(70.7% 0.082 224.3)
-
Step 500
500 (this color)
#238FB1
oklch(60.7% 0.105 224.5)
-
Step 600
600
#007FA1
oklch(55.5% 0.105 225)
-
Step 700
700
#006B88
oklch(49.1% 0.093 224.9)
-
Step 800
800
#005870
oklch(42.8% 0.081 224.4)
-
Step 900
900
#06495D
oklch(37.8% 0.069 224.8)
-
Step 950
950
#092B36
oklch(27.1% 0.043 223.5)
#238FB1 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) | #7C8CB3 | 0.081 |
| Deuteranopia (no green cones) | #697EB1 | 0.071 |
| Tritanopia (no blue cones) | #00999A | 0.054 |
| Achromatopsia (no color) | #848484 | 0.105 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #238FB1
#238FB1
oklch(60.7% 0.105 224.5)
- #B66D4C
#B66D4C
oklch(60.8% 0.104 44.6)
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 #238FB1, 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 0.034
- Cool Blue #4984B8 ΔE 0.042
- Steel Blue #4682B4 ΔE 0.043
- Dusty Blue #5A86AD ΔE 0.044
- Off Blue #5684AE ΔE 0.044
- Teal Green #0A9396 ΔE 0.049
- Water Blue #0E87CC ΔE 0.053
Use #238FB1 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.