#5B8583
Closest named color: Steel Grey (#6F828A). oklch(58.5% 0.046 192.2), rgb(91, 133, 131).
Aa
Black text reads best on this color (5.12:1).
About this color
#5B8583 is a medium-dark, muted teal or cyan. In OKLCH its lightness is 59%, its chroma 0.046 and its hue 192°. Its hue sits on the cool side of the wheel. The nearest named color is Steel Grey (#6F828A), ΔE 0.030 away. Black text reads best on it, at 5.12:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (59%) |
| Chroma | muted (0.046) |
| Temperature | cool |
| Nearest name | Steel Grey (#6F828A) |
| Black text | 5.12:1 |
| White text | 4.09:1 |
Values
| HEX | #5B8583 |
| RGB | rgb(91, 133, 131) |
| HSL | hsl(177, 19%, 44%) |
| OKLCH | oklch(58.5% 0.046 192.2) |
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 #5B8583 | 4.09:1 | AA large text | Lc -73.6 | Content text, not long reading |
| Black text on #5B8583 | 5.12:1 | AA | Lc 36.0 | Non-text elements, placeholder text |
| #5B8583 text on white | 4.09:1 | AA large text | Lc 68.1 | Content text, not long reading |
| #5B8583 text on black | 5.12:1 | AA | Lc -33.6 | 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
#F3F6F6
oklch(97.1% 0.003 197.1)
-
Step 100
100
#E5EBEB
oklch(93.6% 0.006 197)
-
Step 200
200
#D1DCDB
oklch(88.6% 0.012 190.4)
-
Step 300
300
#B2C5C4
oklch(80.9% 0.021 192.9)
-
Step 400
400
#89A8A6
oklch(70.8% 0.034 191.6)
-
Step 500
500
#6B9290
oklch(63.1% 0.043 192.2)
-
Step 600
600 (this color)
#5B8583
oklch(58.5% 0.046 192.2)
-
Step 700
700
#436967
oklch(49.2% 0.043 191.6)
-
Step 800
800
#375554
oklch(42.6% 0.036 193.2)
-
Step 900
900
#304645
oklch(37.6% 0.027 192.5)
-
Step 950
950
#1C2929
oklch(26.9% 0.018 196.1)
#5B8583 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) | #808183 | 0.049 |
| Deuteranopia (no green cones) | #787B83 | 0.045 |
| Tritanopia (no blue cones) | #4C8784 | 0.016 |
| Achromatopsia (no color) | #7D7D7D | 0.047 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5B8583
#5B8583
oklch(58.5% 0.046 192.2)
- #957174
#957174
oklch(58.5% 0.046 13)
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 #5B8583, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Steel Grey #6F828A ΔE 0.030
- Battleship Grey #6B7C85 ΔE 0.033
- Dusty Teal #4C9085 ΔE 0.034
- Grey Blue #647D8E ΔE 0.035
- Slate Gray #708090 ΔE 0.040
- Steel #738595 ΔE 0.044
- Medium Grey #7D7F7C ΔE 0.045
- Battleship Gray #6C757D ΔE 0.048
Use #5B8583 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.