#599EA0
Closest named color: Cadet Blue (#5F9EA0). oklch(65.5% 0.07 198), rgb(89, 158, 160).
Aa
Black text reads best on this color (6.82:1).
About this color
#599EA0 is a medium-light, muted teal or cyan. In OKLCH its lightness is 65%, its chroma 0.070 and its hue 198°. Its hue sits on the cool side of the wheel. The nearest named color is Cadet Blue (#5F9EA0), ΔE 0.006 away. Black text reads best on it, at 6.82:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (65%) |
| Chroma | muted (0.070) |
| Temperature | cool |
| Nearest name | Cadet Blue (#5F9EA0) |
| Black text | 6.82:1 |
| White text | 3.07:1 |
Values
| HEX | #599EA0 |
| RGB | rgb(89, 158, 160) |
| HSL | hsl(182, 29%, 49%) |
| OKLCH | oklch(65.5% 0.07 198) |
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 #599EA0 | 3.07:1 | AA large text | Lc -62.9 | Content text, not long reading |
| Black text on #599EA0 | 6.82:1 | AA | Lc 46.5 | Large or bold text, headings |
| #599EA0 text on white | 3.07:1 | AA large text | Lc 57.6 | Large or bold text, headings |
| #599EA0 text on black | 6.82:1 | AA | Lc -44.2 | 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
#E3ECEC
oklch(93.6% 0.01 197)
-
Step 200
200
#CBDDDE
oklch(88.4% 0.019 200.8)
-
Step 300
300
#A8C8C8
oklch(80.9% 0.034 196.5)
-
Step 400
400
#78ACAD
oklch(70.8% 0.055 197.5)
-
Step 500
500 (this color)
#599EA0
oklch(65.5% 0.07 198)
-
Step 600
600
#328183
oklch(55.6% 0.076 197.5)
-
Step 700
700
#236D6F
oklch(49.1% 0.071 197.7)
-
Step 800
800
#20595B
oklch(42.8% 0.059 198.4)
-
Step 900
900
#20494A
oklch(37.7% 0.046 197.5)
-
Step 950
950
#142B2B
oklch(27% 0.029 195.6)
#599EA0 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) | #9698A0 | 0.073 |
| Deuteranopia (no green cones) | #898FA1 | 0.067 |
| Tritanopia (no blue cones) | #36A29E | 0.028 |
| Achromatopsia (no color) | #939393 | 0.070 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #599EA0
#599EA0
oklch(65.5% 0.07 198)
- #B87F80
#B87F80
oklch(65.4% 0.071 18)
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 #599EA0, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cadet Blue #5F9EA0 ΔE 0.006
- Dull Teal #5F9E8F ΔE 0.025
- Grey Teal #5E9B8A ΔE 0.031
- Sea #3C9992 ΔE 0.036
- Persian Green #2A9D8F ΔE 0.045
- Greyblue #77A1B5 ΔE 0.048
- Dusty Teal #4C9085 ΔE 0.053
- Blue Green #0F9B8E ΔE 0.055
Use #599EA0 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.