#588CCC
Closest named color: Faded Blue (#658CBB). oklch(63.1% 0.112 254.4), rgb(88, 140, 204).
Aa
Black text reads best on this color (6.03:1).
About this color
#588CCC is a medium-light, moderately saturated blue. In OKLCH its lightness is 63%, its chroma 0.112 and its hue 254°. Its hue sits on the cool side of the wheel. The nearest named color is Faded Blue (#658CBB), ΔE 0.029 away. Black text reads best on it, at 6.03:1.
| Hue family | Blues |
| Lightness | medium-light (63%) |
| Chroma | moderately saturated (0.112) |
| Temperature | cool |
| Nearest name | Faded Blue (#658CBB) |
| Black text | 6.03:1 |
| White text | 3.47:1 |
Values
| HEX | #588CCC |
| RGB | rgb(88, 140, 204) |
| HSL | hsl(213, 53%, 57%) |
| OKLCH | oklch(63.1% 0.112 254.4) |
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 #588CCC | 3.47:1 | AA large text | Lc -67.6 | Content text, not long reading |
| Black text on #588CCC | 6.03:1 | AA | Lc 41.9 | Non-text elements, placeholder text |
| #588CCC text on white | 3.47:1 | AA large text | Lc 62.2 | Content text, not long reading |
| #588CCC text on black | 6.03:1 | AA | Lc -39.5 | 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
#E3EBF5
oklch(93.7% 0.016 253.9)
-
Step 200
200
#CCDBED
oklch(88.6% 0.03 253)
-
Step 300
300
#A9C3E4
oklch(80.9% 0.055 254.5)
-
Step 400
400
#7BA3D7
oklch(70.6% 0.088 255.3)
-
Step 500
500 (this color)
#588CCC
oklch(63.1% 0.112 254.4)
-
Step 600
600
#3C75B9
oklch(55.6% 0.122 254.2)
-
Step 700
700
#2E629F
oklch(49.1% 0.113 254.1)
-
Step 800
800
#275081
oklch(42.7% 0.094 254.3)
-
Step 900
900
#254368
oklch(37.8% 0.073 254.6)
-
Step 950
950
#16273D
oklch(27% 0.047 255.4)
#588CCC 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) | #7290CF | 0.033 |
| Deuteranopia (no green cones) | #6384CB | 0.023 |
| Tritanopia (no blue cones) | #009BA3 | 0.098 |
| Achromatopsia (no color) | #898989 | 0.112 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #588CCC
#588CCC
oklch(63.1% 0.112 254.4)
- #B17E30
#B17E30
oklch(63% 0.112 74.3)
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 #588CCC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Faded Blue #658CBB ΔE 0.029
- Dark Sky Blue #448EE4 ΔE 0.038
- Cool Blue #4984B8 ΔE 0.040
- Dusty Blue #5A86AD ΔE 0.047
- Off Blue #5684AE ΔE 0.047
- Steel Blue #4682B4 ΔE 0.048
- Water Blue #0E87CC ΔE 0.050
- Soft Blue #6488EA ΔE 0.051
Use #588CCC 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.