#588AA8
Closest named color: Dusty Blue (#5A86AD). oklch(61% 0.071 235.9), rgb(88, 138, 168).
Aa
Black text reads best on this color (5.61:1).
About this color
#588AA8 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 61%, its chroma 0.071 and its hue 236°. Its hue sits on the cool side of the wheel. The nearest named color is Dusty Blue (#5A86AD), ΔE 0.016 away. Black text reads best on it, at 5.61:1.
| Hue family | Blues |
| Lightness | medium-dark (61%) |
| Chroma | moderately saturated (0.071) |
| Temperature | cool |
| Nearest name | Dusty Blue (#5A86AD) |
| Black text | 5.61:1 |
| White text | 3.73:1 |
Values
| HEX | #588AA8 |
| RGB | rgb(88, 138, 168) |
| HSL | hsl(203, 31%, 50%) |
| OKLCH | oklch(61% 0.071 235.9) |
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 #588AA8 | 3.73:1 | AA large text | Lc -70.4 | Content text, not long reading |
| Black text on #588AA8 | 5.61:1 | AA | Lc 39.2 | Non-text elements, placeholder text |
| #588AA8 text on white | 3.73:1 | AA large text | Lc 64.9 | Content text, not long reading |
| #588AA8 text on black | 5.61:1 | AA | Lc -36.8 | 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 500.
-
Step 50
50
#F3F6F8
oklch(97.1% 0.004 236.5)
-
Step 100
100
#E4EBF0
oklch(93.6% 0.01 238.5)
-
Step 200
200
#CEDBE4
oklch(88.4% 0.019 237.8)
-
Step 300
300
#ACC5D4
oklch(81% 0.034 234.2)
-
Step 400
400
#80A7BF
oklch(70.8% 0.055 235.6)
-
Step 500
500 (this color)
#588AA8
oklch(61% 0.071 235.9)
-
Step 600
600
#437A9A
oklch(55.5% 0.077 235.9)
-
Step 700
700
#356784
oklch(49.2% 0.071 236.2)
-
Step 800
800
#2C546B
oklch(42.7% 0.059 235.7)
-
Step 900
900
#284557
oklch(37.6% 0.047 237.1)
-
Step 950
950
#182933
oklch(27.1% 0.029 235.2)
#588AA8 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) | #7C89A9 | 0.044 |
| Deuteranopia (no green cones) | #7180A8 | 0.039 |
| Tritanopia (no blue cones) | #339294 | 0.055 |
| Achromatopsia (no color) | #848484 | 0.071 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #588AA8
#588AA8
oklch(61% 0.071 235.9)
- #A47859
#A47859
oklch(60.9% 0.071 56.1)
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 #588AA8, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusty Blue #5A86AD ΔE 0.016
- Off Blue #5684AE ΔE 0.022
- Faded Blue #658CBB ΔE 0.034
- Blue Grey #758DA3 ΔE 0.037
- Cool Blue #4984B8 ΔE 0.037
- Steel Blue #4682B4 ΔE 0.039
- Silver Lake Blue #778DA9 ΔE 0.039
- Steel #738595 ΔE 0.039
Use #588AA8 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.