#518A91
Closest named color: Dusty Teal (#4C9085). oklch(59.7% 0.061 205.7), rgb(81, 138, 145).
Aa
Black text reads best on this color (5.39:1).
About this color
#518A91 is a medium-dark, muted teal or cyan. In OKLCH its lightness is 60%, its chroma 0.061 and its hue 206°. Its hue sits on the cool side of the wheel. The nearest named color is Dusty Teal (#4C9085), ΔE 0.030 away. Black text reads best on it, at 5.39:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (60%) |
| Chroma | muted (0.061) |
| Temperature | cool |
| Nearest name | Dusty Teal (#4C9085) |
| Black text | 5.39:1 |
| White text | 3.89:1 |
Values
| HEX | #518A91 |
| RGB | rgb(81, 138, 145) |
| HSL | hsl(187, 28%, 44%) |
| OKLCH | oklch(59.7% 0.061 205.7) |
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 #518A91 | 3.89:1 | AA large text | Lc -71.8 | Content text, not long reading |
| Black text on #518A91 | 5.39:1 | AA | Lc 37.8 | Non-text elements, placeholder text |
| #518A91 text on white | 3.89:1 | AA large text | Lc 66.3 | Content text, not long reading |
| #518A91 text on black | 5.39:1 | AA | Lc -35.4 | 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 500.
-
Step 50
50
#F2F6F7
oklch(97% 0.004 214.3)
-
Step 100
100
#E4ECED
oklch(93.7% 0.009 205.9)
-
Step 200
200
#CDDCDE
oklch(88.4% 0.016 206.4)
-
Step 300
300
#ABC7CA
oklch(81% 0.03 204.5)
-
Step 400
400
#7EAAAF
oklch(70.8% 0.048 204.9)
-
Step 500
500 (this color)
#518A91
oklch(59.7% 0.061 205.7)
-
Step 600
600
#3F7F86
oklch(55.7% 0.066 204.8)
-
Step 700
700
#306B72
oklch(49.2% 0.062 205.8)
-
Step 800
800
#29575D
oklch(42.7% 0.051 206.6)
-
Step 900
900
#26484C
oklch(37.8% 0.04 205.4)
-
Step 950
950
#172A2C
oklch(27% 0.025 204.3)
#518A91 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) | #828692 | 0.060 |
| Deuteranopia (no green cones) | #777E91 | 0.055 |
| Tritanopia (no blue cones) | #338E8C | 0.029 |
| Achromatopsia (no color) | #818181 | 0.061 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #518A91
#518A91
oklch(59.7% 0.061 205.7)
- #A1716D
#A1716D
oklch(59.7% 0.062 24.4)
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 #518A91, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusty Teal #4C9085 ΔE 0.030
- Steel Grey #6F828A ΔE 0.038
- Grey Blue #647D8E ΔE 0.040
- Teal Green #0A9396 ΔE 0.042
- Steel #738595 ΔE 0.043
- Slate Gray #708090 ΔE 0.044
- Dark Cyan #008B8B ΔE 0.045
- Sea #3C9992 ΔE 0.045
Use #518A91 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.