#578387
Closest named color: Grey Blue (#647D8E). oklch(58% 0.049 203.1), rgb(87, 131, 135).
Aa
Black text reads best on this color (5.00:1).
About this color
#578387 is a medium-dark, muted teal or cyan. In OKLCH its lightness is 58%, its chroma 0.049 and its hue 203°. Its hue sits on the cool side of the wheel. The nearest named color is Grey Blue (#647D8E), ΔE 0.028 away. Black text reads best on it, at 5.00:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (58%) |
| Chroma | muted (0.049) |
| Temperature | cool |
| Nearest name | Grey Blue (#647D8E) |
| Black text | 5.00:1 |
| White text | 4.19:1 |
Values
| HEX | #578387 |
| RGB | rgb(87, 131, 135) |
| HSL | hsl(185, 22%, 44%) |
| OKLCH | oklch(58% 0.049 203.1) |
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 #578387 | 4.19:1 | AA large text | Lc -74.4 | Content text, not long reading |
| Black text on #578387 | 5.00:1 | AA | Lc 35.2 | Non-text elements, placeholder text |
| #578387 text on white | 4.19:1 | AA large text | Lc 68.9 | Content text, not long reading |
| #578387 text on black | 5.00:1 | AA | Lc -32.8 | 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
#E5EBEC
oklch(93.6% 0.007 208.8)
-
Step 200
200
#D0DCDD
oklch(88.6% 0.013 202.9)
-
Step 300
300
#B1C5C7
oklch(80.9% 0.022 204)
-
Step 400
400
#88A7AA
oklch(70.6% 0.034 203.7)
-
Step 500
500
#699295
oklch(63.1% 0.045 201.8)
-
Step 600
600 (this color)
#578387
oklch(58% 0.049 203.1)
-
Step 700
700
#41686C
oklch(49% 0.044 204.1)
-
Step 800
800
#365558
oklch(42.7% 0.037 203.6)
-
Step 900
900
#2F4648
oklch(37.6% 0.029 202.8)
-
Step 950
950
#1C292A
oklch(26.9% 0.018 202.1)
#578387 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) | #7D7F87 | 0.050 |
| Deuteranopia (no green cones) | #747987 | 0.045 |
| Tritanopia (no blue cones) | #458684 | 0.021 |
| Achromatopsia (no color) | #7C7C7C | 0.049 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #578387
#578387
oklch(58% 0.049 203.1)
- #956F6D
#956F6D
oklch(57.9% 0.049 22.1)
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 #578387, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Grey Blue #647D8E ΔE 0.028
- Battleship Grey #6B7C85 ΔE 0.030
- Steel Grey #6F828A ΔE 0.031
- Slate Gray #708090 ΔE 0.037
- Dusty Teal #4C9085 ΔE 0.041
- Steel #738595 ΔE 0.043
- Battleship Gray #6C757D ΔE 0.044
- Stormy Blue #507B9C ΔE 0.047
Use #578387 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.