#4E637B
Closest named color: Slate (#516572). oklch(49.2% 0.046 252.1), rgb(78, 99, 123).
Aa
White text reads best on this color (6.18:1).
About this color
#4E637B is a medium-dark, muted blue. In OKLCH its lightness is 49%, its chroma 0.046 and its hue 252°. Its hue sits on the cool side of the wheel. The nearest named color is Slate (#516572), ΔE 0.018 away. White text reads best on it, at 6.18:1.
| Hue family | Blues |
| Lightness | medium-dark (49%) |
| Chroma | muted (0.046) |
| Temperature | cool |
| Nearest name | Slate (#516572) |
| Black text | 3.39:1 |
| White text | 6.18:1 |
Values
| HEX | #4E637B |
| RGB | rgb(78, 99, 123) |
| HSL | hsl(212, 22%, 39%) |
| OKLCH | oklch(49.2% 0.046 252.1) |
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 #4E637B | 6.18:1 | AA | Lc -86.0 | Fine for body text |
| Black text on #4E637B | 3.39:1 | AA large text | Lc 23.2 | Dividers and decoration only |
| #4E637B text on white | 6.18:1 | AA | Lc 80.8 | Fine for body text |
| #4E637B text on black | 3.39:1 | AA large text | Lc -21.0 | Dividers and decoration only |
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 700.
-
Step 50
50
#F4F6F7
oklch(97.2% 0.003 228.8)
-
Step 100
100
#E7EAEE
oklch(93.6% 0.006 255.5)
-
Step 200
200
#D3DAE1
oklch(88.5% 0.012 248)
-
Step 300
300
#B7C2CF
oklch(81% 0.022 252.5)
-
Step 400
400
#91A3B7
oklch(70.8% 0.036 251.1)
-
Step 500
500
#768CA5
oklch(63.2% 0.045 251.8)
-
Step 600
600
#5E7690
oklch(55.7% 0.049 250.8)
-
Step 700
700 (this color)
#4E637B
oklch(49.2% 0.046 252.1)
-
Step 800
800
#405164
oklch(42.8% 0.038 251.5)
-
Step 900
900
#364351
oklch(37.7% 0.029 250.5)
-
Step 950
950
#202730
oklch(27% 0.02 254.8)
#4E637B 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) | #5A647C | 0.017 |
| Deuteranopia (no green cones) | #555F7B | 0.015 |
| Tritanopia (no blue cones) | #40686B | 0.039 |
| Achromatopsia (no color) | #616161 | 0.046 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4E637B
#4E637B
oklch(49.2% 0.046 252.1)
- #725D44
#725D44
oklch(49.3% 0.046 71.3)
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 #4E637B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Slate #516572 ΔE 0.018
- YInMn Blue #415A77 ΔE 0.034
- Denim #3B638C ΔE 0.034
- Dusty Grape #545775 ΔE 0.035
- Dusky Blue #475F94 ΔE 0.046
- Dusk #4E5481 ΔE 0.049
- Metallic Blue #4F738E ΔE 0.050
- Dim Gray #696969 ΔE 0.054
Use #4E637B 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.