#455D75
Closest named color: YInMn Blue (#415A77). oklch(46.9% 0.049 248.9), rgb(69, 93, 117).
Aa
White text reads best on this color (6.82:1).
About this color
#455D75 is a medium-dark, muted blue. In OKLCH its lightness is 47%, its chroma 0.049 and its hue 249°. Its hue sits on the cool side of the wheel. The nearest named color is YInMn Blue (#415A77), ΔE 0.012 away. White text reads best on it, at 6.82:1.
| Hue family | Blues |
| Lightness | medium-dark (47%) |
| Chroma | muted (0.049) |
| Temperature | cool |
| Nearest name | YInMn Blue (#415A77) |
| Black text | 3.07:1 |
| White text | 6.82:1 |
Values
| HEX | #455D75 |
| RGB | rgb(69, 93, 117) |
| HSL | hsl(210, 26%, 36%) |
| OKLCH | oklch(46.9% 0.049 248.9) |
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 #455D75 | 6.82:1 | AA | Lc -88.5 | Fine for body text |
| Black text on #455D75 | 3.07:1 | AA large text | Lc 20.5 | Dividers and decoration only |
| #455D75 text on white | 6.82:1 | AA | Lc 83.5 | Fine for body text |
| #455D75 text on black | 3.07:1 | AA large text | Lc -18.4 | 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
#E6EAEE
oklch(93.5% 0.007 247.9)
-
Step 200
200
#D3DAE2
oklch(88.5% 0.013 251.6)
-
Step 300
300
#B5C2D0
oklch(80.8% 0.024 250.1)
-
Step 400
400
#8FA3B8
oklch(70.7% 0.038 249.7)
-
Step 500
500
#738CA6
oklch(63% 0.049 249.6)
-
Step 600
600
#5B7691
oklch(55.5% 0.053 248.8)
-
Step 700
700 (this color)
#455D75
oklch(46.9% 0.049 248.9)
-
Step 800
800
#3E5164
oklch(42.7% 0.04 248.8)
-
Step 900
900
#354352
oklch(37.7% 0.032 250.4)
-
Step 950
950
#1F2730
oklch(26.9% 0.02 251.6)
#455D75 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) | #545D76 | 0.021 |
| Deuteranopia (no green cones) | #4E5875 | 0.018 |
| Tritanopia (no blue cones) | #346365 | 0.042 |
| Achromatopsia (no color) | #5B5B5B | 0.049 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #455D75
#455D75
oklch(46.9% 0.049 248.9)
- #6D563C
#6D563C
oklch(47% 0.049 69.6)
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 #455D75, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- YInMn Blue #415A77 ΔE 0.012
- Dusty Grape #545775 ΔE 0.026
- Slate #516572 ΔE 0.032
- Denim #3B638C ΔE 0.037
- Dusk #4E5481 ΔE 0.039
- Light Navy Blue #2E5A88 ΔE 0.043
- Dusky Blue #475F94 ΔE 0.050
- Denim Blue #3B5B92 ΔE 0.051
Use #455D75 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.