#588BC7
Closest named color: Faded Blue (#658CBB). oklch(62.7% 0.107 253.4), rgb(88, 139, 199).
Aa
Black text reads best on this color (5.93:1).
About this color
#588BC7 is a medium-light, moderately saturated blue. In OKLCH its lightness is 63%, its chroma 0.107 and its hue 253°. Its hue sits on the cool side of the wheel. The nearest named color is Faded Blue (#658CBB), ΔE 0.023 away. Black text reads best on it, at 5.93:1.
| Hue family | Blues |
| Lightness | medium-light (63%) |
| Chroma | moderately saturated (0.107) |
| Temperature | cool |
| Nearest name | Faded Blue (#658CBB) |
| Black text | 5.93:1 |
| White text | 3.53:1 |
Values
| HEX | #588BC7 |
| RGB | rgb(88, 139, 199) |
| HSL | hsl(212, 50%, 56%) |
| OKLCH | oklch(62.7% 0.107 253.4) |
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 #588BC7 | 3.53:1 | AA large text | Lc -68.3 | Content text, not long reading |
| Black text on #588BC7 | 5.93:1 | AA | Lc 41.2 | Non-text elements, placeholder text |
| #588BC7 text on white | 3.53:1 | AA large text | Lc 62.8 | Content text, not long reading |
| #588BC7 text on black | 5.93:1 | AA | Lc -38.9 | 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
#CCDBEC
oklch(88.5% 0.029 251.5)
-
Step 300
300
#AAC3E2
oklch(80.9% 0.052 253.9)
-
Step 400
400
#7CA4D4
oklch(70.8% 0.083 253.4)
-
Step 500
500 (this color)
#588BC7
oklch(62.7% 0.107 253.4)
-
Step 600
600
#3E75B5
oklch(55.5% 0.116 253.6)
-
Step 700
700
#30629C
oklch(49% 0.108 253.7)
-
Step 800
800
#28507E
oklch(42.5% 0.089 253.4)
-
Step 900
900
#254366
oklch(37.7% 0.07 253.4)
-
Step 950
950
#16273B
oklch(26.8% 0.044 253.3)
#588BC7 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) | #728ECA | 0.032 |
| Deuteranopia (no green cones) | #6483C6 | 0.024 |
| Tritanopia (no blue cones) | #0299A0 | 0.094 |
| Achromatopsia (no color) | #888888 | 0.107 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #588BC7
#588BC7
oklch(62.7% 0.107 253.4)
- #AF7D36
#AF7D36
oklch(62.6% 0.107 73)
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 #588BC7, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Faded Blue #658CBB ΔE 0.023
- Cool Blue #4984B8 ΔE 0.033
- Dusty Blue #5A86AD ΔE 0.039
- Off Blue #5684AE ΔE 0.039
- Steel Blue #4682B4 ΔE 0.042
- Dark Sky Blue #448EE4 ΔE 0.045
- Water Blue #0E87CC ΔE 0.050
- Soft Blue #6488EA ΔE 0.058
Use #588BC7 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.