#599AA4
Closest named color: Cadet Blue (#5F9EA0). oklch(64.7% 0.068 208.3), rgb(89, 154, 164).
Aa
Black text reads best on this color (6.58:1).
About this color
#599AA4 is a medium-light, muted teal or cyan. In OKLCH its lightness is 65%, its chroma 0.068 and its hue 208°. Its hue sits on the cool side of the wheel. The nearest named color is Cadet Blue (#5F9EA0), ΔE 0.016 away. Black text reads best on it, at 6.58:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (65%) |
| Chroma | muted (0.068) |
| Temperature | cool |
| Nearest name | Cadet Blue (#5F9EA0) |
| Black text | 6.58:1 |
| White text | 3.18:1 |
Values
| HEX | #599AA4 |
| RGB | rgb(89, 154, 164) |
| HSL | hsl(188, 30%, 50%) |
| OKLCH | oklch(64.7% 0.068 208.3) |
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 #599AA4 | 3.18:1 | AA large text | Lc -64.4 | Content text, not long reading |
| Black text on #599AA4 | 6.58:1 | AA | Lc 45.1 | Large or bold text, headings |
| #599AA4 text on white | 3.18:1 | AA large text | Lc 59.0 | Large or bold text, headings |
| #599AA4 text on black | 6.58:1 | AA | Lc -42.8 | 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
#F2F6F7
oklch(97% 0.004 214.3)
-
Step 100
100
#E3ECED
oklch(93.7% 0.01 204.9)
-
Step 200
200
#CCDDDF
oklch(88.5% 0.018 205.3)
-
Step 300
300
#A9C7CC
oklch(80.9% 0.033 208.8)
-
Step 400
400
#79AAB2
oklch(70.6% 0.053 208.7)
-
Step 500
500 (this color)
#599AA4
oklch(64.7% 0.068 208.3)
-
Step 600
600
#367F8A
oklch(55.5% 0.074 208.7)
-
Step 700
700
#276B75
oklch(48.9% 0.069 208.7)
-
Step 800
800
#23585F
oklch(42.8% 0.057 207.1)
-
Step 900
900
#22484E
oklch(37.6% 0.044 208.8)
-
Step 950
950
#152A2E
oklch(26.9% 0.028 211.1)
#599AA4 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) | #9095A5 | 0.066 |
| Deuteranopia (no green cones) | #848CA4 | 0.061 |
| Tritanopia (no blue cones) | #349F9D | 0.034 |
| Achromatopsia (no color) | #909090 | 0.068 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #599AA4
#599AA4
oklch(64.7% 0.068 208.3)
- #B47F77
#B47F77
oklch(64.7% 0.068 28.6)
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 #599AA4, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cadet Blue #5F9EA0 ΔE 0.016
- Dull Teal #5F9E8F ΔE 0.037
- Sea #3C9992 ΔE 0.039
- Grey Teal #5E9B8A ΔE 0.040
- Blue Grey #758DA3 ΔE 0.045
- Greyblue #77A1B5 ΔE 0.047
- Silver Lake Blue #778DA9 ΔE 0.050
- Persian Green #2A9D8F ΔE 0.052
Use #599AA4 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.