#258191
Closest named color: Ocean (#017B92). oklch(55.8% 0.086 211.8), rgb(37, 129, 145).
Aa
Black text reads best on this color (4.62:1).
About this color
#258191 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 56%, its chroma 0.086 and its hue 212°. Its hue sits on the cool side of the wheel. The nearest named color is Ocean (#017B92), ΔE 0.024 away. Black text reads best on it, at 4.62:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (56%) |
| Chroma | moderately saturated (0.086) |
| Temperature | cool |
| Nearest name | Ocean (#017B92) |
| Black text | 4.62:1 |
| White text | 4.53:1 |
Values
| HEX | #258191 |
| RGB | rgb(37, 129, 145) |
| HSL | hsl(189, 59%, 36%) |
| OKLCH | oklch(55.8% 0.086 211.8) |
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 #258191 | 4.53:1 | AA | Lc -76.7 | Fine for body text |
| Black text on #258191 | 4.62:1 | AA | Lc 32.9 | Non-text elements, placeholder text |
| #258191 text on white | 4.53:1 | AA | Lc 71.2 | Content text, not long reading |
| #258191 text on black | 4.62:1 | AA | Lc -30.5 | 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 600.
-
Step 50
50
#F2F6F7
oklch(97% 0.004 214.3)
-
Step 100
100
#E2ECEE
oklch(93.6% 0.011 211)
-
Step 200
200
#CADDE1
oklch(88.5% 0.021 211.8)
-
Step 300
300
#A5C8CF
oklch(81% 0.039 211.1)
-
Step 400
400
#72ABB7
oklch(70.6% 0.062 212.3)
-
Step 500
500
#4996A5
oklch(63% 0.079 212)
-
Step 600
600 (this color)
#258191
oklch(55.8% 0.086 211.8)
-
Step 700
700
#146C7B
oklch(49% 0.08 212.4)
-
Step 800
800
#165864
oklch(42.6% 0.066 212.6)
-
Step 900
900
#1B4951
oklch(37.7% 0.051 210.7)
-
Step 950
950
#112B30
oklch(27.1% 0.033 211.7)
#258191 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) | #747C92 | 0.079 |
| Deuteranopia (no green cones) | #657191 | 0.073 |
| Tritanopia (no blue cones) | #008886 | 0.033 |
| Achromatopsia (no color) | #767676 | 0.086 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #258191
#258191
oklch(55.8% 0.086 211.8)
- #A06054
#A06054
oklch(55.8% 0.086 31.4)
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 #258191, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Ocean #017B92 ΔE 0.024
- Teal Blue #01889F ΔE 0.025
- Teal #008080 ΔE 0.031
- Dark Cyan #008B8B ΔE 0.035
- Cerulean #457B9D ΔE 0.038
- Deep Aqua #08787F ΔE 0.039
- Bluegreen #017A79 ΔE 0.044
- Stormy Blue #507B9C ΔE 0.045
Use #258191 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.