#599991
Closest named color: Grey Teal (#5E9B8A). oklch(63.8% 0.067 185.4), rgb(89, 153, 145).
Aa
Black text reads best on this color (6.39:1).
About this color
#599991 is a medium-light, muted teal or cyan. In OKLCH its lightness is 64%, its chroma 0.067 and its hue 185°. Its hue sits on the cool side of the wheel. The nearest named color is Grey Teal (#5E9B8A), ΔE 0.014 away. Black text reads best on it, at 6.39:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (64%) |
| Chroma | muted (0.067) |
| Temperature | cool |
| Nearest name | Grey Teal (#5E9B8A) |
| Black text | 6.39:1 |
| White text | 3.28:1 |
Values
| HEX | #599991 |
| RGB | rgb(89, 153, 145) |
| HSL | hsl(173, 26%, 47%) |
| OKLCH | oklch(63.8% 0.067 185.4) |
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 #599991 | 3.28:1 | AA large text | Lc -65.5 | Content text, not long reading |
| Black text on #599991 | 6.39:1 | AA | Lc 44.0 | Non-text elements, placeholder text |
| #599991 text on white | 3.28:1 | AA large text | Lc 60.1 | Content text, not long reading |
| #599991 text on black | 6.39:1 | AA | Lc -41.6 | 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
#F2F6F6
oklch(97% 0.004 197.1)
-
Step 100
100
#E3ECEB
oklch(93.6% 0.01 189.1)
-
Step 200
200
#CDDDDB
oklch(88.5% 0.017 187.8)
-
Step 300
300
#AAC8C3
oklch(80.9% 0.033 184.4)
-
Step 400
400
#7BACA5
oklch(70.8% 0.053 185.1)
-
Step 500
500 (this color)
#599991
oklch(63.8% 0.067 185.4)
-
Step 600
600
#398179
oklch(55.5% 0.073 185.6)
-
Step 700
700
#2B6D66
oklch(49% 0.068 185.7)
-
Step 800
800
#255953
oklch(42.7% 0.056 185.2)
-
Step 900
900
#244945
oklch(37.7% 0.043 186.5)
-
Step 950
950
#162B28
oklch(27% 0.028 184.2)
#599991 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) | #939391 | 0.071 |
| Deuteranopia (no green cones) | #888A92 | 0.068 |
| Tritanopia (no blue cones) | #3F9C96 | 0.021 |
| Achromatopsia (no color) | #8E8E8E | 0.068 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #599991
#599991
oklch(63.8% 0.067 185.4)
- #AF7A85
#AF7A85
oklch(63.6% 0.068 5.5)
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 #599991, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Grey Teal #5E9B8A ΔE 0.014
- Dull Teal #5F9E8F ΔE 0.018
- Sea #3C9992 ΔE 0.024
- Cadet Blue #5F9EA0 ΔE 0.025
- Dusty Teal #4C9085 ΔE 0.033
- Persian Green #2A9D8F ΔE 0.035
- Blue Green #0F9B8E ΔE 0.044
- Green Grey #77926F ΔE 0.052
Use #599991 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.