#588DBA
Closest named color: Faded Blue (#658CBB). oklch(62.5% 0.089 245.5), rgb(88, 141, 186).
Aa
Black text reads best on this color (5.93:1).
About this color
#588DBA is a medium-light, moderately saturated blue. In OKLCH its lightness is 62%, its chroma 0.089 and its hue 245°. Its hue sits on the cool side of the wheel. The nearest named color is Faded Blue (#658CBB), ΔE 0.014 away. Black text reads best on it, at 5.93:1.
| Hue family | Blues |
| Lightness | medium-light (62%) |
| Chroma | moderately saturated (0.089) |
| Temperature | cool |
| Nearest name | Faded Blue (#658CBB) |
| Black text | 5.93:1 |
| White text | 3.53:1 |
Values
| HEX | #588DBA |
| RGB | rgb(88, 141, 186) |
| HSL | hsl(208, 42%, 54%) |
| OKLCH | oklch(62.5% 0.089 245.5) |
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 #588DBA | 3.53:1 | AA large text | Lc -68.3 | Content text, not long reading |
| Black text on #588DBA | 5.93:1 | AA | Lc 41.2 | Non-text elements, placeholder text |
| #588DBA text on white | 3.53:1 | AA large text | Lc 62.8 | Content text, not long reading |
| #588DBA text on black | 5.93:1 | 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
#F2F6F9
oklch(97.1% 0.006 239.8)
-
Step 100
100
#E3EBF2
oklch(93.6% 0.013 244.3)
-
Step 200
200
#CDDBE8
oklch(88.5% 0.023 246.1)
-
Step 300
300
#AAC4DB
oklch(80.8% 0.043 245.1)
-
Step 400
400
#7CA6CA
oklch(70.8% 0.07 244.9)
-
Step 500
500 (this color)
#588DBA
oklch(62.5% 0.089 245.5)
-
Step 600
600
#3E78A8
oklch(55.5% 0.097 245.7)
-
Step 700
700
#306590
oklch(49.1% 0.089 245.6)
-
Step 800
800
#295375
oklch(42.8% 0.074 245.2)
-
Step 900
900
#26455E
oklch(37.8% 0.057 244.4)
-
Step 950
950
#172837
oklch(26.9% 0.036 246.3)
#588DBA 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) | #7A8EBC | 0.041 |
| Deuteranopia (no green cones) | #6D84B9 | 0.032 |
| Tritanopia (no blue cones) | #20989C | 0.076 |
| Achromatopsia (no color) | #888888 | 0.089 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #588DBA
#588DBA
oklch(62.5% 0.089 245.5)
- #AC7C4B
#AC7C4B
oklch(62.4% 0.089 65.5)
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 #588DBA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Faded Blue #658CBB ΔE 0.014
- Dusty Blue #5A86AD ΔE 0.024
- Off Blue #5684AE ΔE 0.028
- Cool Blue #4984B8 ΔE 0.031
- Steel Blue #4682B4 ΔE 0.038
- Silver Lake Blue #778DA9 ΔE 0.042
- Blue Grey #758DA3 ΔE 0.046
- Blue NCS #118AB2 ΔE 0.050
Use #588DBA 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.