#588CC0
Closest named color: Faded Blue (#658CBB). oklch(62.5% 0.097 249.6), rgb(88, 140, 192).
Aa
Black text reads best on this color (5.92:1).
About this color
#588CC0 is a medium-light, moderately saturated blue. In OKLCH its lightness is 63%, its chroma 0.097 and its hue 250°. Its hue sits on the cool side of the wheel. The nearest named color is Faded Blue (#658CBB), ΔE 0.015 away. Black text reads best on it, at 5.92:1.
| Hue family | Blues |
| Lightness | medium-light (63%) |
| Chroma | moderately saturated (0.097) |
| Temperature | cool |
| Nearest name | Faded Blue (#658CBB) |
| Black text | 5.92:1 |
| White text | 3.54:1 |
Values
| HEX | #588CC0 |
| RGB | rgb(88, 140, 192) |
| HSL | hsl(210, 45%, 55%) |
| OKLCH | oklch(62.5% 0.097 249.6) |
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 #588CC0 | 3.54:1 | AA large text | Lc -68.4 | Content text, not long reading |
| Black text on #588CC0 | 5.92:1 | AA | Lc 41.2 | Non-text elements, placeholder text |
| #588CC0 text on white | 3.54:1 | AA large text | Lc 62.9 | Content text, not long reading |
| #588CC0 text on black | 5.92:1 | AA | Lc -38.8 | 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
#F2F6FA
oklch(97.1% 0.007 247.9)
-
Step 100
100
#E3EBF3
oklch(93.6% 0.014 248)
-
Step 200
200
#CCDBEA
oklch(88.5% 0.026 248.1)
-
Step 300
300
#AAC4DF
oklch(81% 0.048 249.4)
-
Step 400
400
#7CA5CE
oklch(70.7% 0.075 248.9)
-
Step 500
500 (this color)
#588CC0
oklch(62.5% 0.097 249.6)
-
Step 600
600
#3E77AE
oklch(55.6% 0.105 249.5)
-
Step 700
700
#306496
oklch(49.2% 0.098 249.7)
-
Step 800
800
#295279
oklch(42.8% 0.08 249.1)
-
Step 900
900
#264462
oklch(37.8% 0.063 249.8)
-
Step 950
950
#172839
oklch(27.1% 0.039 249.5)
#588CC0 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) | #778EC2 | 0.037 |
| Deuteranopia (no green cones) | #6983BF | 0.029 |
| Tritanopia (no blue cones) | #16989E | 0.084 |
| Achromatopsia (no color) | #888888 | 0.097 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #588CC0
#588CC0
oklch(62.5% 0.097 249.6)
- #AD7D42
#AD7D42
oklch(62.5% 0.097 70.1)
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 #588CC0, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Faded Blue #658CBB ΔE 0.015
- Dusty Blue #5A86AD ΔE 0.030
- Cool Blue #4984B8 ΔE 0.030
- Off Blue #5684AE ΔE 0.032
- Steel Blue #4682B4 ΔE 0.038
- Silver Lake Blue #778DA9 ΔE 0.049
- Water Blue #0E87CC ΔE 0.053
- Blue NCS #118AB2 ΔE 0.053
Use #588CC0 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.