#588DAD
Closest named color: Dusty Blue (#5A86AD). oklch(61.9% 0.074 236.2), rgb(88, 141, 173).
Aa
Black text reads best on this color (5.82:1).
About this color
#588DAD is a medium-dark, moderately saturated blue. In OKLCH its lightness is 62%, its chroma 0.074 and its hue 236°. Its hue sits on the cool side of the wheel. The nearest named color is Dusty Blue (#5A86AD), ΔE 0.020 away. Black text reads best on it, at 5.82:1.
| Hue family | Blues |
| Lightness | medium-dark (62%) |
| Chroma | moderately saturated (0.074) |
| Temperature | cool |
| Nearest name | Dusty Blue (#5A86AD) |
| Black text | 5.82:1 |
| White text | 3.60:1 |
Values
| HEX | #588DAD |
| RGB | rgb(88, 141, 173) |
| HSL | hsl(203, 34%, 51%) |
| OKLCH | oklch(61.9% 0.074 236.2) |
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 #588DAD | 3.60:1 | AA large text | Lc -69.0 | Content text, not long reading |
| Black text on #588DAD | 5.82:1 | AA | Lc 40.6 | Non-text elements, placeholder text |
| #588DAD text on white | 3.60:1 | AA large text | Lc 63.5 | Content text, not long reading |
| #588DAD text on black | 5.82:1 | AA | Lc -38.2 | 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
#F2F6F8
oklch(97.1% 0.005 228.8)
-
Step 100
100
#E4EBF0
oklch(93.6% 0.01 238.5)
-
Step 200
200
#CDDCE5
oklch(88.6% 0.02 233.9)
-
Step 300
300
#ABC5D5
oklch(80.9% 0.036 234.9)
-
Step 400
400
#7EA7C1
oklch(70.8% 0.059 236.5)
-
Step 500
500 (this color)
#588DAD
oklch(61.9% 0.074 236.2)
-
Step 600
600
#407A9D
oklch(55.5% 0.082 237.2)
-
Step 700
700
#316786
oklch(49.1% 0.076 236.3)
-
Step 800
800
#2A546D
oklch(42.7% 0.063 236.9)
-
Step 900
900
#274658
oklch(37.8% 0.048 235.5)
-
Step 950
950
#172934
oklch(27.1% 0.031 236.4)
#588DAD 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) | #7E8CAF | 0.046 |
| Deuteranopia (no green cones) | #7283AC | 0.039 |
| Tritanopia (no blue cones) | #2E9597 | 0.058 |
| Achromatopsia (no color) | #878787 | 0.075 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #588DAD
#588DAD
oklch(61.9% 0.074 236.2)
- #A97A59
#A97A59
oklch(61.9% 0.075 55.9)
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 #588DAD, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusty Blue #5A86AD ΔE 0.020
- Off Blue #5684AE ΔE 0.027
- Faded Blue #658CBB ΔE 0.028
- Blue Grey #758DA3 ΔE 0.036
- Silver Lake Blue #778DA9 ΔE 0.036
- Cool Blue #4984B8 ΔE 0.039
- Steel Blue #4682B4 ΔE 0.042
- Light Slate Gray #778899 ΔE 0.043
Use #588DAD 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.