#588CA1
Closest named color: Dusty Blue (#5A86AD). oklch(61.2% 0.064 225.6), rgb(88, 140, 161).
Aa
Black text reads best on this color (5.68:1).
About this color
#588CA1 is a medium-dark, muted teal or cyan. In OKLCH its lightness is 61%, its chroma 0.064 and its hue 226°. Its hue sits on the cool side of the wheel. The nearest named color is Dusty Blue (#5A86AD), ΔE 0.029 away. Black text reads best on it, at 5.68:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (61%) |
| Chroma | muted (0.064) |
| Temperature | cool |
| Nearest name | Dusty Blue (#5A86AD) |
| Black text | 5.68:1 |
| White text | 3.69:1 |
Values
| HEX | #588CA1 |
| RGB | rgb(88, 140, 161) |
| HSL | hsl(197, 29%, 49%) |
| OKLCH | oklch(61.2% 0.064 225.6) |
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 #588CA1 | 3.69:1 | AA large text | Lc -70.0 | Content text, not long reading |
| Black text on #588CA1 | 5.68:1 | AA | Lc 39.6 | Non-text elements, placeholder text |
| #588CA1 text on white | 3.69:1 | AA large text | Lc 64.5 | Content text, not long reading |
| #588CA1 text on black | 5.68:1 | AA | Lc -37.2 | 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
#F3F6F8
oklch(97.1% 0.004 236.5)
-
Step 100
100
#E4EBEE
oklch(93.6% 0.009 225.1)
-
Step 200
200
#CEDCE2
oklch(88.6% 0.017 225.2)
-
Step 300
300
#ACC5D0
oklch(80.8% 0.031 226.1)
-
Step 400
400
#7FA8B9
oklch(70.8% 0.051 225.3)
-
Step 500
500 (this color)
#588CA1
oklch(61.2% 0.064 225.6)
-
Step 600
600
#427C92
oklch(55.6% 0.07 225)
-
Step 700
700
#34687D
oklch(49% 0.065 226.7)
-
Step 800
800
#2C5565
oklch(42.7% 0.053 225.6)
-
Step 900
900
#284652
oklch(37.6% 0.041 225.6)
-
Step 950
950
#182930
oklch(26.9% 0.026 225.8)
#588CA1 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) | #818AA2 | 0.050 |
| Deuteranopia (no green cones) | #7681A1 | 0.045 |
| Tritanopia (no blue cones) | #379293 | 0.043 |
| Achromatopsia (no color) | #858585 | 0.064 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #588CA1
#588CA1
oklch(61.2% 0.064 225.6)
- #A57863
#A57863
oklch(61.2% 0.065 46)
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 #588CA1, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusty Blue #5A86AD ΔE 0.029
- Blue Grey #758DA3 ΔE 0.035
- Off Blue #5684AE ΔE 0.035
- Steel #738595 ΔE 0.035
- Light Slate Gray #778899 ΔE 0.037
- Silver Lake Blue #778DA9 ΔE 0.040
- Slate Gray #708090 ΔE 0.042
- Steel Grey #6F828A ΔE 0.042
Use #588CA1 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.