#588DCC
Closest named color: Faded Blue (#658CBB). oklch(63.4% 0.111 253.7), rgb(88, 141, 204).
Aa
Black text reads best on this color (6.09:1).
About this color
#588DCC is a medium-light, moderately saturated blue. In OKLCH its lightness is 63%, its chroma 0.111 and its hue 254°. Its hue sits on the cool side of the wheel. The nearest named color is Faded Blue (#658CBB), ΔE 0.028 away. Black text reads best on it, at 6.09:1.
| Hue family | Blues |
| Lightness | medium-light (63%) |
| Chroma | moderately saturated (0.111) |
| Temperature | cool |
| Nearest name | Faded Blue (#658CBB) |
| Black text | 6.09:1 |
| White text | 3.44:1 |
Values
| HEX | #588DCC |
| RGB | rgb(88, 141, 204) |
| HSL | hsl(213, 53%, 57%) |
| OKLCH | oklch(63.4% 0.111 253.7) |
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 #588DCC | 3.44:1 | AA large text | Lc -67.3 | Content text, not long reading |
| Black text on #588DCC | 6.09:1 | AA | Lc 42.3 | Non-text elements, placeholder text |
| #588DCC text on white | 3.44:1 | AA large text | Lc 61.8 | Content text, not long reading |
| #588DCC text on black | 6.09:1 | AA | Lc -39.9 | 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
#E3EBF4
oklch(93.7% 0.015 251.2)
-
Step 200
200
#CCDBED
oklch(88.6% 0.03 253)
-
Step 300
300
#A9C3E4
oklch(80.9% 0.055 254.5)
-
Step 400
400
#7AA4D6
oklch(70.7% 0.087 253.3)
-
Step 500
500 (this color)
#588DCC
oklch(63.4% 0.111 253.7)
-
Step 600
600
#3B75B8
oklch(55.6% 0.121 253.6)
-
Step 700
700
#2D629E
oklch(49% 0.112 253.4)
-
Step 800
800
#275080
oklch(42.6% 0.093 253.9)
-
Step 900
900
#244367
oklch(37.7% 0.072 253.4)
-
Step 950
950
#16273C
oklch(26.9% 0.046 254.4)
#588DCC 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) | #7390CF | 0.033 |
| Deuteranopia (no green cones) | #6485CB | 0.024 |
| Tritanopia (no blue cones) | #009BA3 | 0.096 |
| Achromatopsia (no color) | #8A8A8A | 0.111 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #588DCC
#588DCC
oklch(63.4% 0.111 253.7)
- #B27F33
#B27F33
oklch(63.4% 0.111 73.9)
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 #588DCC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Faded Blue #658CBB ΔE 0.028
- Dark Sky Blue #448EE4 ΔE 0.039
- Cool Blue #4984B8 ΔE 0.041
- Dusty Blue #5A86AD ΔE 0.047
- Off Blue #5684AE ΔE 0.048
- Steel Blue #4682B4 ΔE 0.049
- Water Blue #0E87CC ΔE 0.052
- Soft Blue #6488EA ΔE 0.052
Use #588DCC 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.