#238FAF
Closest named color: Blue NCS (#118AB2). oklch(60.6% 0.104 223), rgb(35, 143, 175).
Aa
Black text reads best on this color (5.61:1).
About this color
#238FAF is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 61%, its chroma 0.104 and its hue 223°. Its hue sits on the cool side of the wheel. The nearest named color is Blue NCS (#118AB2), ΔE 0.019 away. Black text reads best on it, at 5.61:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (61%) |
| Chroma | moderately saturated (0.104) |
| Temperature | cool |
| Nearest name | Blue NCS (#118AB2) |
| Black text | 5.61:1 |
| White text | 3.73:1 |
Values
| HEX | #238FAF |
| RGB | rgb(35, 143, 175) |
| HSL | hsl(194, 67%, 41%) |
| OKLCH | oklch(60.6% 0.104 223) |
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 #238FAF | 3.73:1 | AA large text | Lc -70.0 | Content text, not long reading |
| Black text on #238FAF | 5.61:1 | AA | Lc 39.5 | Non-text elements, placeholder text |
| #238FAF text on white | 3.73:1 | AA large text | Lc 64.5 | Content text, not long reading |
| #238FAF text on black | 5.61:1 | AA | Lc -37.1 | 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
#F1F7F9
oklch(97.2% 0.007 219.6)
-
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
#9EC8D9
oklch(80.8% 0.05 224.6)
-
Step 400
400
#64ACC6
oklch(70.7% 0.081 223.4)
-
Step 500
500 (this color)
#238FAF
oklch(60.6% 0.104 223)
-
Step 600
600
#00809F
oklch(55.6% 0.103 222.6)
-
Step 700
700
#006B86
oklch(49% 0.091 223.1)
-
Step 800
800
#00586F
oklch(42.7% 0.08 223.4)
-
Step 900
900
#06495C
oklch(37.7% 0.068 223.5)
-
Step 950
950
#092B36
oklch(27.1% 0.043 223.5)
#238FAF 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) | #7D8CB1 | 0.082 |
| Deuteranopia (no green cones) | #6A7EAF | 0.073 |
| Tritanopia (no blue cones) | #009999 | 0.053 |
| Achromatopsia (no color) | #848484 | 0.104 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #238FAF
#238FAF
oklch(60.6% 0.104 223)
- #B56C4E
#B56C4E
oklch(60.5% 0.103 42.8)
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 #238FAF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blue NCS #118AB2 ΔE 0.019
- Teal Blue #01889F ΔE 0.032
- Cool Blue #4984B8 ΔE 0.044
- Steel Blue #4682B4 ΔE 0.044
- Dusty Blue #5A86AD ΔE 0.045
- Off Blue #5684AE ΔE 0.045
- Teal Green #0A9396 ΔE 0.046
- Water Blue #0E87CC ΔE 0.056
Use #238FAF 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.