#648598
Closest named color: Steel (#738595). oklch(59.9% 0.047 233.8), rgb(100, 133, 152).
Aa
Black text reads best on this color (5.35:1).
About this color
#648598 is a medium-dark, muted blue. In OKLCH its lightness is 60%, its chroma 0.047 and its hue 234°. Its hue sits on the cool side of the wheel. The nearest named color is Steel (#738595), ΔE 0.019 away. Black text reads best on it, at 5.35:1.
| Hue family | Blues |
| Lightness | medium-dark (60%) |
| Chroma | muted (0.047) |
| Temperature | cool |
| Nearest name | Steel (#738595) |
| Black text | 5.35:1 |
| White text | 3.92:1 |
Values
| HEX | #648598 |
| RGB | rgb(100, 133, 152) |
| HSL | hsl(202, 21%, 49%) |
| OKLCH | oklch(59.9% 0.047 233.8) |
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 #648598 | 3.92:1 | AA large text | Lc -72.1 | Content text, not long reading |
| Black text on #648598 | 5.35:1 | AA | Lc 37.5 | Non-text elements, placeholder text |
| #648598 text on white | 3.92:1 | AA large text | Lc 66.6 | Content text, not long reading |
| #648598 text on black | 5.35:1 | AA | Lc -35.0 | 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
#E6EBEE
oklch(93.7% 0.007 233.6)
-
Step 200
200
#D1DBE0
oklch(88.5% 0.013 228.9)
-
Step 300
300
#B3C3CD
oklch(80.8% 0.023 235.1)
-
Step 400
400
#8BA5B4
oklch(70.7% 0.036 233.3)
-
Step 500
500 (this color)
#648598
oklch(59.9% 0.047 233.8)
-
Step 600
600
#55798D
oklch(55.7% 0.051 233.2)
-
Step 700
700
#456678
oklch(49.2% 0.048 232.9)
-
Step 800
800
#395362
oklch(42.8% 0.04 234.3)
-
Step 900
900
#314550
oklch(37.8% 0.031 232.7)
-
Step 950
950
#1D282F
oklch(27% 0.02 236.4)
#648598 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 | 0.032 |
| Deuteranopia (no green cones) | #757E98 | 0.028 |
| Tritanopia (no blue cones) | #538A8B | 0.035 |
| Achromatopsia (no color) | #808080 | 0.047 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #648598
#648598
oklch(59.9% 0.047 233.8)
- #977965
#977965
oklch(59.9% 0.048 55.3)
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 #648598, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Steel #738595 ΔE 0.019
- Slate Gray #708090 ΔE 0.020
- Steel Grey #6F828A ΔE 0.023
- Grey Blue #647D8E ΔE 0.024
- Light Slate Gray #778899 ΔE 0.027
- Battleship Grey #6B7C85 ΔE 0.033
- Dusty Blue #5A86AD ΔE 0.033
- Blue Grey #758DA3 ΔE 0.035
Use #648598 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.