#599C8B
Closest named color: Grey Teal (#5E9B8A). oklch(64.3% 0.074 175.7), rgb(89, 156, 139).
Aa
Black text reads best on this color (6.55:1).
About this color
#599C8B is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 64%, its chroma 0.074 and its hue 176°. Its hue sits on the cool side of the wheel. The nearest named color is Grey Teal (#5E9B8A), ΔE 0.005 away. Black text reads best on it, at 6.55:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (64%) |
| Chroma | moderately saturated (0.074) |
| Temperature | cool |
| Nearest name | Grey Teal (#5E9B8A) |
| Black text | 6.55:1 |
| White text | 3.20:1 |
Values
| HEX | #599C8B |
| RGB | rgb(89, 156, 139) |
| HSL | hsl(165, 27%, 48%) |
| OKLCH | oklch(64.3% 0.074 175.7) |
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 #599C8B | 3.20:1 | AA large text | Lc -64.6 | Content text, not long reading |
| Black text on #599C8B | 6.55:1 | AA | Lc 44.9 | Non-text elements, placeholder text |
| #599C8B text on white | 3.20:1 | AA large text | Lc 59.1 | Large or bold text, headings |
| #599C8B text on black | 6.55:1 | AA | Lc -42.6 | 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
#F2F6F5
oklch(97% 0.004 179.7)
-
Step 100
100
#E3ECE9
oklch(93.5% 0.01 174.3)
-
Step 200
200
#CCDED8
oklch(88.5% 0.021 173.9)
-
Step 300
300
#A9C9BF
oklch(80.9% 0.037 174.5)
-
Step 400
400
#7AAD9F
oklch(70.7% 0.058 175.6)
-
Step 500
500 (this color)
#599C8B
oklch(64.3% 0.074 175.7)
-
Step 600
600
#378371
oklch(55.7% 0.081 175.2)
-
Step 700
700
#286E5F
oklch(49% 0.074 176.4)
-
Step 800
800
#235A4D
oklch(42.7% 0.062 175.2)
-
Step 900
900
#234A40
oklch(37.7% 0.048 174.9)
-
Step 950
950
#152B26
oklch(26.9% 0.03 177.6)
#599C8B 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) | #98958A | 0.078 |
| Deuteranopia (no green cones) | #8C8C8C | 0.074 |
| Tritanopia (no blue cones) | #429E97 | 0.023 |
| Achromatopsia (no color) | #909090 | 0.074 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #599C8B
#599C8B
oklch(64.3% 0.074 175.7)
- #B27A8F
#B27A8F
oklch(64.3% 0.075 355.2)
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 #599C8B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Grey Teal #5E9B8A ΔE 0.005
- Dull Teal #5F9E8F ΔE 0.010
- Sea #3C9992 ΔE 0.028
- Cadet Blue #5F9EA0 ΔE 0.032
- Persian Green #2A9D8F ΔE 0.032
- Dusty Teal #4C9085 ΔE 0.039
- Blue Green #0F9B8E ΔE 0.043
- Ocean Green #3D9973 ΔE 0.045
Use #599C8B 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.