#8599AA
Closest named color: Cool Gray (#8D99AE). oklch(67.3% 0.034 243.9), rgb(133, 153, 170).
Aa
Black text reads best on this color (7.13:1).
About this color
#8599AA is a medium-light, muted blue. In OKLCH its lightness is 67%, its chroma 0.034 and its hue 244°. Its hue sits on the cool side of the wheel. The nearest named color is Cool Gray (#8D99AE), ΔE 0.013 away. Black text reads best on it, at 7.13:1.
| Hue family | Blues |
| Lightness | medium-light (67%) |
| Chroma | muted (0.034) |
| Temperature | cool |
| Nearest name | Cool Gray (#8D99AE) |
| Black text | 7.13:1 |
| White text | 2.94:1 |
Values
| HEX | #8599AA |
| RGB | rgb(133, 153, 170) |
| HSL | hsl(208, 18%, 59%) |
| OKLCH | oklch(67.3% 0.034 243.9) |
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 #8599AA | 2.94:1 | Fails | Lc -61.3 | Content text, not long reading |
| Black text on #8599AA | 7.13:1 | AAA | Lc 48.1 | Large or bold text, headings |
| #8599AA text on white | 2.94:1 | Fails | Lc 55.9 | Large or bold text, headings |
| #8599AA text on black | 7.13:1 | AAA | Lc -45.9 | Large or bold text, headings |
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 400.
-
Step 50
50
#F4F6F7
oklch(97.2% 0.003 228.8)
-
Step 100
100
#E6EAEE
oklch(93.5% 0.007 247.9)
-
Step 200
200
#D3DAE0
oklch(88.5% 0.011 243.7)
-
Step 300
300
#B6C2CE
oklch(80.8% 0.022 248.1)
-
Step 400
400 (this color)
#8599AA
oklch(67.3% 0.034 243.9)
-
Step 500
500
#748DA2
oklch(63.1% 0.043 243.8)
-
Step 600
600
#5C778D
oklch(55.6% 0.047 243.3)
-
Step 700
700
#4B6478
oklch(49.1% 0.044 242.9)
-
Step 800
800
#3E5162
oklch(42.6% 0.037 245.8)
-
Step 900
900
#354350
oklch(37.6% 0.029 246.7)
-
Step 950
950
#1F282F
oklch(27.1% 0.018 241.7)
#8599AA 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) | #9299AB | 0.018 |
| Deuteranopia (no green cones) | #8E95AA | 0.016 |
| Tritanopia (no blue cones) | #7B9D9E | 0.028 |
| Achromatopsia (no color) | #969696 | 0.034 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #8599AA
#8599AA
oklch(67.3% 0.034 243.9)
- #A69281
#A69281
oklch(67.3% 0.034 62.6)
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 #8599AA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cool Gray #8D99AE ΔE 0.013
- Bluey Grey #89A0B0 ΔE 0.021
- Greyblue #77A1B5 ΔE 0.026
- Bluegrey #85A3B2 ΔE 0.027
- Cool Grey #95A3A6 ΔE 0.039
- Silver Lake Blue #778DA9 ΔE 0.041
- Blue Grey #758DA3 ΔE 0.042
- Cool Steel #97A7B3 ΔE 0.048
Use #8599AA 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.