#588CA6
Closest named color: Dusty Blue (#5A86AD). oklch(61.4% 0.068 231.1), rgb(88, 140, 166).
Aa
Black text reads best on this color (5.71:1).
About this color
#588CA6 is a medium-dark, muted blue. In OKLCH its lightness is 61%, its chroma 0.068 and its hue 231°. Its hue sits on the cool side of the wheel. The nearest named color is Dusty Blue (#5A86AD), ΔE 0.023 away. Black text reads best on it, at 5.71:1.
| Hue family | Blues |
| Lightness | medium-dark (61%) |
| Chroma | muted (0.068) |
| Temperature | cool |
| Nearest name | Dusty Blue (#5A86AD) |
| Black text | 5.71:1 |
| White text | 3.67:1 |
Values
| HEX | #588CA6 |
| RGB | rgb(88, 140, 166) |
| HSL | hsl(200, 31%, 50%) |
| OKLCH | oklch(61.4% 0.068 231.1) |
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 #588CA6 | 3.67:1 | AA large text | Lc -69.7 | Content text, not long reading |
| Black text on #588CA6 | 5.71:1 | AA | Lc 39.9 | Non-text elements, placeholder text |
| #588CA6 text on white | 3.67:1 | AA large text | Lc 64.2 | Content text, not long reading |
| #588CA6 text on black | 5.71:1 | AA | Lc -37.4 | 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
#E4EBEF
oklch(93.6% 0.009 232.4)
-
Step 200
200
#CEDCE3
oklch(88.6% 0.018 229)
-
Step 300
300
#ACC5D3
oklch(80.9% 0.034 232.3)
-
Step 400
400
#7FA7BC
oklch(70.7% 0.053 231.3)
-
Step 500
500 (this color)
#588CA6
oklch(61.4% 0.068 231.1)
-
Step 600
600
#427B97
oklch(55.6% 0.074 231.5)
-
Step 700
700
#336881
oklch(49.2% 0.069 230.9)
-
Step 800
800
#2B5569
oklch(42.8% 0.057 230.8)
-
Step 900
900
#284655
oklch(37.7% 0.044 231.3)
-
Step 950
950
#182932
oklch(27% 0.028 232.3)
#588CA6 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) | #7F8AA7 | 0.047 |
| Deuteranopia (no green cones) | #7482A6 | 0.041 |
| Tritanopia (no blue cones) | #349394 | 0.050 |
| Achromatopsia (no color) | #858585 | 0.068 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #588CA6
#588CA6
oklch(61.4% 0.068 231.1)
- #A6795F
#A6795F
oklch(61.5% 0.068 51.1)
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 #588CA6, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusty Blue #5A86AD ΔE 0.023
- Off Blue #5684AE ΔE 0.030
- Blue Grey #758DA3 ΔE 0.034
- Faded Blue #658CBB ΔE 0.037
- Silver Lake Blue #778DA9 ΔE 0.038
- Steel #738595 ΔE 0.038
- Light Slate Gray #778899 ΔE 0.039
- Cool Blue #4984B8 ΔE 0.044
Use #588CA6 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.