#578C8A
Closest named color: Dusty Teal (#4C9085). oklch(60.2% 0.057 192.7), rgb(87, 140, 138).
Aa
Black text reads best on this color (5.52:1).
About this color
#578C8A is a medium-dark, muted teal or cyan. In OKLCH its lightness is 60%, its chroma 0.057 and its hue 193°. Its hue sits on the cool side of the wheel. The nearest named color is Dusty Teal (#4C9085), ΔE 0.019 away. Black text reads best on it, at 5.52:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (60%) |
| Chroma | muted (0.057) |
| Temperature | cool |
| Nearest name | Dusty Teal (#4C9085) |
| Black text | 5.52:1 |
| White text | 3.80:1 |
Values
| HEX | #578C8A |
| RGB | rgb(87, 140, 138) |
| HSL | hsl(178, 23%, 45%) |
| OKLCH | oklch(60.2% 0.057 192.7) |
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 #578C8A | 3.80:1 | AA large text | Lc -71.0 | Content text, not long reading |
| Black text on #578C8A | 5.52:1 | AA | Lc 38.6 | Non-text elements, placeholder text |
| #578C8A text on white | 3.80:1 | AA large text | Lc 65.5 | Content text, not long reading |
| #578C8A text on black | 5.52:1 | AA | Lc -36.2 | 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
#F3F6F6
oklch(97.1% 0.003 197.1)
-
Step 100
100
#E4ECEB
oklch(93.7% 0.009 188.1)
-
Step 200
200
#CEDCDC
oklch(88.4% 0.015 196.9)
-
Step 300
300
#ADC7C5
oklch(81% 0.028 190.9)
-
Step 400
400
#81AAA8
oklch(70.8% 0.044 192.5)
-
Step 500
500 (this color)
#578C8A
oklch(60.2% 0.057 192.7)
-
Step 600
600
#447F7D
oklch(55.6% 0.062 192.7)
-
Step 700
700
#356B69
oklch(49% 0.058 192.3)
-
Step 800
800
#2D5756
oklch(42.6% 0.047 193.5)
-
Step 900
900
#294847
oklch(37.7% 0.037 193.1)
-
Step 950
950
#182A29
oklch(26.9% 0.024 191.4)
#578C8A 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) | #86878A | 0.060 |
| Deuteranopia (no green cones) | #7C808B | 0.055 |
| Tritanopia (no blue cones) | #428F8B | 0.020 |
| Achromatopsia (no color) | #838383 | 0.057 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #578C8A
#578C8A
oklch(60.2% 0.057 192.7)
- #A07377
#A07377
oklch(60.2% 0.057 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 #578C8A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusty Teal #4C9085 ΔE 0.019
- Steel Grey #6F828A ΔE 0.039
- Sea #3C9992 ΔE 0.039
- Teal Green #0A9396 ΔE 0.045
- Slate Green #658D6D ΔE 0.045
- Steel #738595 ΔE 0.045
- Grey Teal #5E9B8A ΔE 0.047
- Slate Gray #708090 ΔE 0.048
Use #578C8A 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.