#258A9E
Closest named color: Teal Blue (#01889F). oklch(58.6% 0.093 214.3), rgb(37, 138, 158).
Aa
Black text reads best on this color (5.20:1).
About this color
#258A9E is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 59%, its chroma 0.093 and its hue 214°. Its hue sits on the cool side of the wheel. The nearest named color is Teal Blue (#01889F), ΔE 0.013 away. Black text reads best on it, at 5.20:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (59%) |
| Chroma | moderately saturated (0.093) |
| Temperature | cool |
| Nearest name | Teal Blue (#01889F) |
| Black text | 5.20:1 |
| White text | 4.03:1 |
Values
| HEX | #258A9E |
| RGB | rgb(37, 138, 158) |
| HSL | hsl(190, 62%, 38%) |
| OKLCH | oklch(58.6% 0.093 214.3) |
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 #258A9E | 4.03:1 | AA large text | Lc -72.7 | Content text, not long reading |
| Black text on #258A9E | 5.20:1 | AA | Lc 36.9 | Non-text elements, placeholder text |
| #258A9E text on white | 4.03:1 | AA large text | Lc 67.2 | Content text, not long reading |
| #258A9E text on black | 5.20:1 | AA | Lc -34.4 | 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 600.
-
Step 50
50
#F1F6F8
oklch(97% 0.006 223.5)
-
Step 100
100
#E1ECEF
oklch(93.6% 0.012 215.8)
-
Step 200
200
#C9DDE3
oklch(88.4% 0.023 217.7)
-
Step 300
300
#A3C8D1
oklch(80.9% 0.041 214.2)
-
Step 400
400
#6EACBA
oklch(70.7% 0.067 213.6)
-
Step 500
500
#4297A9
oklch(63.2% 0.085 213.8)
-
Step 600
600 (this color)
#258A9E
oklch(58.6% 0.093 214.3)
-
Step 700
700
#006D7F
oklch(49.2% 0.087 214.3)
-
Step 800
800
#0B5967
oklch(42.8% 0.072 213.8)
-
Step 900
900
#164954
oklch(37.7% 0.056 214.9)
-
Step 950
950
#0F2B31
oklch(27% 0.035 213.8)
#258A9E 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) | #7C859F | 0.084 |
| Deuteranopia (no green cones) | #6B799E | 0.076 |
| Tritanopia (no blue cones) | #009290 | 0.039 |
| Achromatopsia (no color) | #7E7E7E | 0.093 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #258A9E
#258A9E
oklch(58.6% 0.093 214.3)
- #AC6757
#AC6757
oklch(58.6% 0.093 33.9)
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 #258A9E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Teal Blue #01889F ΔE 0.013
- Blue NCS #118AB2 ΔE 0.031
- Teal Green #0A9396 ΔE 0.034
- Dark Cyan #008B8B ΔE 0.034
- Cerulean #457B9D ΔE 0.046
- Ocean #017B92 ΔE 0.049
- Stormy Blue #507B9C ΔE 0.050
- Off Blue #5684AE ΔE 0.052
Use #258A9E 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.