#588E9C
Closest named color: Blue Grey (#758DA3). oklch(61.4% 0.061 216.1), rgb(88, 142, 156).
Aa
Black text reads best on this color (5.76:1).
About this color
#588E9C is a medium-dark, muted teal or cyan. In OKLCH its lightness is 61%, its chroma 0.061 and its hue 216°. Its hue sits on the cool side of the wheel. The nearest named color is Blue Grey (#758DA3), ΔE 0.037 away. Black text reads best on it, at 5.76:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (61%) |
| Chroma | muted (0.061) |
| Temperature | cool |
| Nearest name | Blue Grey (#758DA3) |
| Black text | 5.76:1 |
| White text | 3.64:1 |
Values
| HEX | #588E9C |
| RGB | rgb(88, 142, 156) |
| HSL | hsl(192, 28%, 48%) |
| OKLCH | oklch(61.4% 0.061 216.1) |
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 #588E9C | 3.64:1 | AA large text | Lc -69.4 | Content text, not long reading |
| Black text on #588E9C | 5.76:1 | AA | Lc 40.1 | Non-text elements, placeholder text |
| #588E9C text on white | 3.64:1 | AA large text | Lc 63.9 | Content text, not long reading |
| #588E9C text on black | 5.76:1 | AA | Lc -37.7 | 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
#F3F6F7
oklch(97.1% 0.003 219.5)
-
Step 100
100
#E4EBED
oklch(93.5% 0.008 216.6)
-
Step 200
200
#CEDCE0
oklch(88.5% 0.016 216.7)
-
Step 300
300
#ACC6CD
oklch(80.9% 0.03 215.8)
-
Step 400
400
#7FA9B4
oklch(70.8% 0.048 215.6)
-
Step 500
500 (this color)
#588E9C
oklch(61.4% 0.061 216.1)
-
Step 600
600
#417D8C
oklch(55.5% 0.066 216)
-
Step 700
700
#336A77
oklch(49.2% 0.061 215.2)
-
Step 800
800
#2B5661
oklch(42.7% 0.051 216.5)
-
Step 900
900
#27474F
oklch(37.7% 0.04 215.6)
-
Step 950
950
#182A2E
oklch(27.1% 0.025 213.2)
#588E9C 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) | #848B9D | 0.054 |
| Deuteranopia (no green cones) | #79829C | 0.050 |
| Tritanopia (no blue cones) | #3A9392 | 0.036 |
| Achromatopsia (no color) | #868686 | 0.061 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #588E9C
#588E9C
oklch(61.4% 0.061 216.1)
- #A6786B
#A6786B
oklch(61.5% 0.061 36.4)
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 #588E9C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blue Grey #758DA3 ΔE 0.037
- Steel #738595 ΔE 0.037
- Light Slate Gray #778899 ΔE 0.038
- Dusty Blue #5A86AD ΔE 0.040
- Dusty Teal #4C9085 ΔE 0.041
- Steel Grey #6F828A ΔE 0.041
- Silver Lake Blue #778DA9 ΔE 0.044
- Slate Gray #708090 ΔE 0.044
Use #588E9C 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.