#258690
Closest named color: Dark Cyan (#008B8B). oklch(57% 0.087 205.2), rgb(37, 134, 144).
Aa
Black text reads best on this color (4.89:1).
About this color
#258690 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 57%, its chroma 0.087 and its hue 205°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Cyan (#008B8B), ΔE 0.021 away. Black text reads best on it, at 4.89:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (57%) |
| Chroma | moderately saturated (0.087) |
| Temperature | cool |
| Nearest name | Dark Cyan (#008B8B) |
| Black text | 4.89:1 |
| White text | 4.29:1 |
Values
| HEX | #258690 |
| RGB | rgb(37, 134, 144) |
| HSL | hsl(186, 59%, 35%) |
| OKLCH | oklch(57% 0.087 205.2) |
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 #258690 | 4.29:1 | AA large text | Lc -74.8 | Content text, not long reading |
| Black text on #258690 | 4.89:1 | AA | Lc 34.7 | Non-text elements, placeholder text |
| #258690 text on white | 4.29:1 | AA large text | Lc 69.4 | Content text, not long reading |
| #258690 text on black | 4.89:1 | AA | Lc -32.3 | 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
#F2F6F7
oklch(97% 0.004 214.3)
-
Step 100
100
#E2ECED
oklch(93.6% 0.011 204.1)
-
Step 200
200
#C9DEE0
oklch(88.6% 0.023 203.7)
-
Step 300
300
#A4C8CD
oklch(80.8% 0.039 206.8)
-
Step 400
400
#70ACB3
oklch(70.6% 0.063 205.2)
-
Step 500
500
#4697A1
oklch(63% 0.08 206.2)
-
Step 600
600 (this color)
#258690
oklch(57% 0.087 205.2)
-
Step 700
700
#0C6E77
oklch(49.2% 0.081 205.1)
-
Step 800
800
#125961
oklch(42.6% 0.067 206.4)
-
Step 900
900
#194A4F
oklch(37.9% 0.052 204.6)
-
Step 950
950
#102B2E
oklch(27% 0.033 205.1)
#258690 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) | #7B8091 | 0.086 |
| Deuteranopia (no green cones) | #6B7590 | 0.079 |
| Tritanopia (no blue cones) | #008C89 | 0.026 |
| Achromatopsia (no color) | #7A7A7A | 0.088 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #258690
#258690
oklch(57% 0.087 205.2)
- #A5635D
#A5635D
oklch(57.2% 0.087 25.7)
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 #258690, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Cyan #008B8B ΔE 0.021
- Teal Blue #01889F ΔE 0.023
- Teal #008080 ΔE 0.032
- Teal Green #0A9396 ΔE 0.037
- Ocean #017B92 ΔE 0.039
- Cerulean #457B9D ΔE 0.049
- Deep Aqua #08787F ΔE 0.049
- Bluegreen #017A79 ΔE 0.049
Use #258690 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.