#608598
Closest named color: Slate Gray (#708090). oklch(59.6% 0.051 231), rgb(96, 133, 152).
Aa
Black text reads best on this color (5.30:1).
About this color
#608598 is a medium-dark, muted blue. In OKLCH its lightness is 60%, its chroma 0.051 and its hue 231°. Its hue sits on the cool side of the wheel. The nearest named color is Slate Gray (#708090), ΔE 0.023 away. Black text reads best on it, at 5.30:1.
| Hue family | Blues |
| Lightness | medium-dark (60%) |
| Chroma | muted (0.051) |
| Temperature | cool |
| Nearest name | Slate Gray (#708090) |
| Black text | 5.30:1 |
| White text | 3.95:1 |
Values
| HEX | #608598 |
| RGB | rgb(96, 133, 152) |
| HSL | hsl(200, 23%, 49%) |
| OKLCH | oklch(59.6% 0.051 231) |
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 #608598 | 3.95:1 | AA large text | Lc -72.4 | Content text, not long reading |
| Black text on #608598 | 5.30:1 | AA | Lc 37.2 | Non-text elements, placeholder text |
| #608598 text on white | 3.95:1 | AA large text | Lc 66.9 | Content text, not long reading |
| #608598 text on black | 5.30:1 | AA | Lc -34.8 | 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
#F3F6F7
oklch(97.1% 0.003 219.5)
-
Step 100
100
#E5EBEE
oklch(93.6% 0.008 228.9)
-
Step 200
200
#D1DBE1
oklch(88.6% 0.014 233.8)
-
Step 300
300
#B1C4CE
oklch(80.9% 0.025 230.5)
-
Step 400
400
#88A6B5
oklch(70.8% 0.04 229.6)
-
Step 500
500 (this color)
#608598
oklch(59.6% 0.051 231)
-
Step 600
600
#517A8E
oklch(55.7% 0.055 230.1)
-
Step 700
700
#426679
oklch(49.1% 0.051 232.3)
-
Step 800
800
#365362
oklch(42.6% 0.043 231.6)
-
Step 900
900
#2F4550
oklch(37.7% 0.033 230.4)
-
Step 950
950
#1C282F
oklch(26.9% 0.021 234.2)
#608598 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) | #7C8499 | 0.036 |
| Deuteranopia (no green cones) | #747D98 | 0.033 |
| Tritanopia (no blue cones) | #4C8A8B | 0.036 |
| Achromatopsia (no color) | #808080 | 0.051 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #608598
#608598
oklch(59.6% 0.051 231)
- #987764
#987764
oklch(59.6% 0.05 51.4)
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 #608598, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Slate Gray #708090 ΔE 0.023
- Grey Blue #647D8E ΔE 0.024
- Steel #738595 ΔE 0.024
- Steel Grey #6F828A ΔE 0.026
- Light Slate Gray #778899 ΔE 0.032
- Dusty Blue #5A86AD ΔE 0.032
- Battleship Grey #6B7C85 ΔE 0.033
- Off Blue #5684AE ΔE 0.036
Use #608598 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.