#45657B
Closest named color: Slate (#516572). oklch(49.1% 0.051 239.2), rgb(69, 101, 123).
Aa
White text reads best on this color (6.17:1).
About this color
#45657B is a medium-dark, muted blue. In OKLCH its lightness is 49%, its chroma 0.051 and its hue 239°. Its hue sits on the cool side of the wheel. The nearest named color is Slate (#516572), ΔE 0.020 away. White text reads best on it, at 6.17:1.
| Hue family | Blues |
| Lightness | medium-dark (49%) |
| Chroma | muted (0.051) |
| Temperature | cool |
| Nearest name | Slate (#516572) |
| Black text | 3.40:1 |
| White text | 6.17:1 |
Values
| HEX | #45657B |
| RGB | rgb(69, 101, 123) |
| HSL | hsl(204, 28%, 38%) |
| OKLCH | oklch(49.1% 0.051 239.2) |
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 #45657B | 6.17:1 | AA | Lc -85.9 | Fine for body text |
| Black text on #45657B | 3.40:1 | AA large text | Lc 23.3 | Dividers and decoration only |
| #45657B text on white | 6.17:1 | AA | Lc 80.8 | Fine for body text |
| #45657B text on black | 3.40:1 | AA large text | Lc -21.1 | 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
#F3F6F7
oklch(97.1% 0.003 219.5)
-
Step 100
100
#E6EBEE
oklch(93.7% 0.007 233.6)
-
Step 200
200
#D1DBE1
oklch(88.6% 0.014 233.8)
-
Step 300
300
#B3C3CF
oklch(80.9% 0.024 240.2)
-
Step 400
400
#8BA5B7
oklch(70.8% 0.039 238.3)
-
Step 500
500
#6D8EA5
oklch(63% 0.051 239)
-
Step 600
600
#557891
oklch(55.6% 0.056 240.1)
-
Step 700
700 (this color)
#45657B
oklch(49.1% 0.051 239.2)
-
Step 800
800
#395264
oklch(42.6% 0.043 240.3)
-
Step 900
900
#314451
oklch(37.6% 0.033 238.7)
-
Step 950
950
#1D2830
oklch(27% 0.021 240.1)
#45657B 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) | #5B657C | 0.029 |
| Deuteranopia (no green cones) | #545F7B | 0.025 |
| Tritanopia (no blue cones) | #306B6C | 0.042 |
| Achromatopsia (no color) | #616161 | 0.051 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #45657B
#45657B
oklch(49.1% 0.051 239.2)
- #775A43
#775A43
oklch(49.1% 0.052 59.6)
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 #45657B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Slate #516572 ΔE 0.020
- Denim #3B638C ΔE 0.032
- YInMn Blue #415A77 ΔE 0.034
- Dusty Grape #545775 ΔE 0.043
- Metallic Blue #4F738E ΔE 0.049
- Dusky Blue #475F94 ΔE 0.049
- Light Navy Blue #2E5A88 ΔE 0.052
- Dusk #4E5481 ΔE 0.055
Use #45657B 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.