#599E91
Closest named color: Dull Teal (#5F9E8F). oklch(65% 0.073 180.4), rgb(89, 158, 145).
Aa
Black text reads best on this color (6.72:1).
About this color
#599E91 is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 65%, its chroma 0.073 and its hue 180°. Its hue sits on the cool side of the wheel. The nearest named color is Dull Teal (#5F9E8F), ΔE 0.006 away. Black text reads best on it, at 6.72:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (65%) |
| Chroma | moderately saturated (0.073) |
| Temperature | cool |
| Nearest name | Dull Teal (#5F9E8F) |
| Black text | 6.72:1 |
| White text | 3.12:1 |
Values
| HEX | #599E91 |
| RGB | rgb(89, 158, 145) |
| HSL | hsl(169, 28%, 48%) |
| OKLCH | oklch(65% 0.073 180.4) |
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 #599E91 | 3.12:1 | AA large text | Lc -63.5 | Content text, not long reading |
| Black text on #599E91 | 6.72:1 | AA | Lc 45.9 | Large or bold text, headings |
| #599E91 text on white | 3.12:1 | AA large text | Lc 58.1 | Large or bold text, headings |
| #599E91 text on black | 6.72:1 | AA | Lc -43.6 | 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
#E3ECEA
oklch(93.6% 0.01 181.4)
-
Step 200
200
#CCDEDA
oklch(88.6% 0.02 181.1)
-
Step 300
300
#A9C9C1
oklch(81% 0.036 178.5)
-
Step 400
400
#79ADA2
oklch(70.8% 0.057 179.9)
-
Step 500
500 (this color)
#599E91
oklch(65% 0.073 180.4)
-
Step 600
600
#348375
oklch(55.7% 0.08 179.6)
-
Step 700
700
#256E62
oklch(49% 0.074 180.2)
-
Step 800
800
#215A50
oklch(42.7% 0.062 179.7)
-
Step 900
900
#214A43
oklch(37.7% 0.048 181)
-
Step 950
950
#142B27
oklch(26.9% 0.03 181.4)
#599E91 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) | #999791 | 0.078 |
| Deuteranopia (no green cones) | #8D8E92 | 0.074 |
| Tritanopia (no blue cones) | #3EA09A | 0.022 |
| Achromatopsia (no color) | #929292 | 0.074 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #599E91
#599E91
oklch(65% 0.073 180.4)
- #B57C8D
#B57C8D
oklch(64.9% 0.074 359.9)
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 #599E91, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dull Teal #5F9E8F ΔE 0.006
- Grey Teal #5E9B8A ΔE 0.011
- Cadet Blue #5F9EA0 ΔE 0.024
- Sea #3C9992 ΔE 0.030
- Persian Green #2A9D8F ΔE 0.034
- Dusty Teal #4C9085 ΔE 0.045
- Blue Green #0F9B8E ΔE 0.045
- Greeny Grey #7EA07A ΔE 0.050
Use #599E91 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.