#589FAB
Closest named color: Cadet Blue (#5F9EA0). oklch(66.1% 0.073 209.6), rgb(88, 159, 171).
Aa
Black text reads best on this color (6.96:1).
About this color
#589FAB is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 66%, its chroma 0.073 and its hue 210°. Its hue sits on the cool side of the wheel. The nearest named color is Cadet Blue (#5F9EA0), ΔE 0.016 away. Black text reads best on it, at 6.96:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (66%) |
| Chroma | moderately saturated (0.073) |
| Temperature | cool |
| Nearest name | Cadet Blue (#5F9EA0) |
| Black text | 6.96:1 |
| White text | 3.01:1 |
Values
| HEX | #589FAB |
| RGB | rgb(88, 159, 171) |
| HSL | hsl(189, 33%, 51%) |
| OKLCH | oklch(66.1% 0.073 209.6) |
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 #589FAB | 3.01:1 | AA large text | Lc -62.1 | Content text, not long reading |
| Black text on #589FAB | 6.96:1 | AA | Lc 47.3 | Large or bold text, headings |
| #589FAB text on white | 3.01:1 | AA large text | Lc 56.8 | Large or bold text, headings |
| #589FAB text on black | 6.96:1 | AA | Lc -45.0 | Large or bold text, headings |
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
#F2F6F7
oklch(97% 0.004 214.3)
-
Step 100
100
#E2ECEE
oklch(93.6% 0.011 211)
-
Step 200
200
#CBDDE0
oklch(88.5% 0.02 208.8)
-
Step 300
300
#A7C7CD
oklch(80.8% 0.035 210.2)
-
Step 400
400
#76ABB4
oklch(70.7% 0.057 209.2)
-
Step 500
500 (this color)
#589FAB
oklch(66.1% 0.073 209.6)
-
Step 600
600
#2E808D
oklch(55.6% 0.08 209.8)
-
Step 700
700
#1F6C78
oklch(49.1% 0.074 210)
-
Step 800
800
#1D5861
oklch(42.7% 0.061 209.3)
-
Step 900
900
#1F494F
oklch(37.8% 0.048 207.8)
-
Step 950
950
#132B2F
oklch(27.2% 0.031 209.5)
#589FAB 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) | #949AAC | 0.070 |
| Deuteranopia (no green cones) | #8790AB | 0.065 |
| Tritanopia (no blue cones) | #2AA5A3 | 0.038 |
| Achromatopsia (no color) | #949494 | 0.074 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #589FAB
#589FAB
oklch(66.1% 0.073 209.6)
- #BB8278
#BB8278
oklch(66.1% 0.073 30.2)
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 #589FAB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cadet Blue #5F9EA0 ΔE 0.016
- Greyblue #77A1B5 ΔE 0.038
- Dull Teal #5F9E8F ΔE 0.041
- Grey Teal #5E9B8A ΔE 0.047
- Sea #3C9992 ΔE 0.048
- Bluegrey #85A3B2 ΔE 0.054
- Blue Grey #758DA3 ΔE 0.054
- Bluey Grey #89A0B0 ΔE 0.056
Use #589FAB 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.