#589CC0
Closest named color: Greyblue (#77A1B5). oklch(66.2% 0.087 233.3), rgb(88, 156, 192).
Aa
Black text reads best on this color (6.93:1).
About this color
#589CC0 is a medium-light, moderately saturated blue. In OKLCH its lightness is 66%, its chroma 0.087 and its hue 233°. Its hue sits on the cool side of the wheel. The nearest named color is Greyblue (#77A1B5), ΔE 0.041 away. Black text reads best on it, at 6.93:1.
| Hue family | Blues |
| Lightness | medium-light (66%) |
| Chroma | moderately saturated (0.087) |
| Temperature | cool |
| Nearest name | Greyblue (#77A1B5) |
| Black text | 6.93:1 |
| White text | 3.02:1 |
Values
| HEX | #589CC0 |
| RGB | rgb(88, 156, 192) |
| HSL | hsl(201, 45%, 55%) |
| OKLCH | oklch(66.2% 0.087 233.3) |
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 #589CC0 | 3.02:1 | AA large text | Lc -62.3 | Content text, not long reading |
| Black text on #589CC0 | 6.93:1 | AA | Lc 47.1 | Large or bold text, headings |
| #589CC0 text on white | 3.02:1 | AA large text | Lc 56.9 | Large or bold text, headings |
| #589CC0 text on black | 6.93:1 | AA | Lc -44.9 | 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
#F2F6F9
oklch(97.1% 0.006 239.8)
-
Step 100
100
#E2EBF1
oklch(93.5% 0.013 236.6)
-
Step 200
200
#CBDCE7
oklch(88.5% 0.024 236)
-
Step 300
300
#A6C6D8
oklch(80.9% 0.043 232.7)
-
Step 400
400
#75A8C5
oklch(70.6% 0.069 234)
-
Step 500
500 (this color)
#589CC0
oklch(66.2% 0.087 233.3)
-
Step 600
600
#2E7CA2
oklch(55.6% 0.095 233.5)
-
Step 700
700
#20698B
oklch(49.2% 0.088 233.2)
-
Step 800
800
#1D5571
oklch(42.6% 0.074 234.2)
-
Step 900
900
#1E475B
oklch(37.8% 0.057 232.2)
-
Step 950
950
#132935
oklch(26.9% 0.036 234.1)
#589CC0 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) | #8B9AC2 | 0.058 |
| Deuteranopia (no green cones) | #7C8FBF | 0.050 |
| Tritanopia (no blue cones) | #09A6A8 | 0.067 |
| Achromatopsia (no color) | #949494 | 0.088 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #589CC0
#589CC0
oklch(66.2% 0.087 233.3)
- #BD845F
#BD845F
oklch(66.2% 0.087 53.6)
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 #589CC0, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Greyblue #77A1B5 ΔE 0.041
- Faded Blue #658CBB ΔE 0.044
- Cadet Blue #5F9EA0 ΔE 0.051
- Silver Lake Blue #778DA9 ΔE 0.052
- Blue Grey #758DA3 ΔE 0.055
- Bluegrey #85A3B2 ΔE 0.060
- Bluey Grey #89A0B0 ΔE 0.061
- Dusty Blue #5A86AD ΔE 0.062
Use #589CC0 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.