#559F88
Closest named color: Grey Teal (#5E9B8A). oklch(64.8% 0.083 171.3), rgb(85, 159, 136).
Aa
Black text reads best on this color (6.70:1).
About this color
#559F88 is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 65%, its chroma 0.083 and its hue 171°. Its hue sits on the cool side of the wheel. The nearest named color is Grey Teal (#5E9B8A), ΔE 0.015 away. Black text reads best on it, at 6.70:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (65%) |
| Chroma | moderately saturated (0.083) |
| Temperature | cool |
| Nearest name | Grey Teal (#5E9B8A) |
| Black text | 6.70:1 |
| White text | 3.13:1 |
Values
| HEX | #559F88 |
| RGB | rgb(85, 159, 136) |
| HSL | hsl(161, 30%, 48%) |
| OKLCH | oklch(64.8% 0.083 171.3) |
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 #559F88 | 3.13:1 | AA large text | Lc -63.6 | Content text, not long reading |
| Black text on #559F88 | 6.70:1 | AA | Lc 45.8 | Large or bold text, headings |
| #559F88 text on white | 3.13:1 | AA large text | Lc 58.2 | Large or bold text, headings |
| #559F88 text on black | 6.70:1 | AA | Lc -43.5 | 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
#F2F7F5
oklch(97.2% 0.006 170.4)
-
Step 100
100
#E3ECE9
oklch(93.5% 0.01 174.3)
-
Step 200
200
#CBDED7
oklch(88.4% 0.022 171.7)
-
Step 300
300
#A7CABD
oklch(81% 0.042 170.7)
-
Step 400
400
#77AE9B
oklch(70.7% 0.064 170.8)
-
Step 500
500 (this color)
#559F88
oklch(64.8% 0.083 171.3)
-
Step 600
600
#2F846D
oklch(55.6% 0.089 171.9)
-
Step 700
700
#20705B
oklch(49.2% 0.083 171.6)
-
Step 800
800
#1E5B4A
oklch(42.7% 0.069 171.3)
-
Step 900
900
#1F4B3E
oklch(37.7% 0.054 171.4)
-
Step 950
950
#132C24
oklch(27% 0.035 170.7)
#559F88 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) | #9B9787 | 0.085 |
| Deuteranopia (no green cones) | #8F8E8A | 0.081 |
| Tritanopia (no blue cones) | #3BA098 | 0.027 |
| Achromatopsia (no color) | #919191 | 0.083 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #559F88
#559F88
oklch(64.8% 0.083 171.3)
- #B67A94
#B67A94
oklch(64.9% 0.082 352)
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 #559F88, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Grey Teal #5E9B8A ΔE 0.015
- Dull Teal #5F9E8F ΔE 0.016
- Persian Green #2A9D8F ΔE 0.032
- Sea #3C9992 ΔE 0.034
- Cadet Blue #5F9EA0 ΔE 0.040
- Ocean Green #3D9973 ΔE 0.040
- Blue Green #0F9B8E ΔE 0.042
- Dusty Teal #4C9085 ΔE 0.046
Use #559F88 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.