#5A8191
Closest named color: Grey Blue (#647D8E). oklch(58% 0.05 225.4), rgb(90, 129, 145).
Aa
Black text reads best on this color (4.98:1).
About this color
#5A8191 is a medium-dark, muted teal or cyan. In OKLCH its lightness is 58%, its chroma 0.050 and its hue 225°. Its hue sits on the cool side of the wheel. The nearest named color is Grey Blue (#647D8E), ΔE 0.015 away. Black text reads best on it, at 4.98:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (58%) |
| Chroma | muted (0.050) |
| Temperature | cool |
| Nearest name | Grey Blue (#647D8E) |
| Black text | 4.98:1 |
| White text | 4.21:1 |
Values
| HEX | #5A8191 |
| RGB | rgb(90, 129, 145) |
| HSL | hsl(197, 23%, 46%) |
| OKLCH | oklch(58% 0.05 225.4) |
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 #5A8191 | 4.21:1 | AA large text | Lc -74.5 | Content text, not long reading |
| Black text on #5A8191 | 4.98:1 | AA | Lc 35.1 | Non-text elements, placeholder text |
| #5A8191 text on white | 4.21:1 | AA large text | Lc 69.0 | Content text, not long reading |
| #5A8191 text on black | 4.98:1 | AA | Lc -32.6 | 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
#F3F6F7
oklch(97.1% 0.003 219.5)
-
Step 100
100
#E5EBED
oklch(93.6% 0.007 219.6)
-
Step 200
200
#D1DBDF
oklch(88.5% 0.012 223.5)
-
Step 300
300
#B2C4CC
oklch(80.9% 0.023 226.2)
-
Step 400
400
#89A6B2
oklch(70.7% 0.037 224.9)
-
Step 500
500
#6C909F
oklch(63.2% 0.046 225.5)
-
Step 600
600 (this color)
#5A8191
oklch(58% 0.05 225.4)
-
Step 700
700
#436775
oklch(49.2% 0.047 224.4)
-
Step 800
800
#38545F
oklch(42.8% 0.038 224.5)
-
Step 900
900
#30454E
oklch(37.7% 0.03 226.3)
-
Step 950
950
#1D292E
oklch(27.2% 0.019 225.4)
#5A8191 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) | #787F92 | 0.039 |
| Deuteranopia (no green cones) | #707991 | 0.035 |
| Tritanopia (no blue cones) | #468686 | 0.034 |
| Achromatopsia (no color) | #7B7B7B | 0.050 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5A8191
#5A8191
oklch(58% 0.05 225.4)
- #947262
#947262
oklch(58.1% 0.049 46.4)
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 #5A8191, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Grey Blue #647D8E ΔE 0.015
- Battleship Grey #6B7C85 ΔE 0.026
- Slate Gray #708090 ΔE 0.027
- Steel Grey #6F828A ΔE 0.028
- Stormy Blue #507B9C ΔE 0.031
- Steel #738595 ΔE 0.036
- Cerulean #457B9D ΔE 0.037
- Battleship Gray #6C757D ΔE 0.042
Use #5A8191 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.