#455D71
Closest named color: YInMn Blue (#415A77). oklch(46.7% 0.044 244), rgb(69, 93, 113).
Aa
White text reads best on this color (6.86:1).
About this color
#455D71 is a medium-dark, muted blue. In OKLCH its lightness is 47%, its chroma 0.044 and its hue 244°. Its hue sits on the cool side of the wheel. The nearest named color is YInMn Blue (#415A77), ΔE 0.016 away. White text reads best on it, at 6.86:1.
| Hue family | Blues |
| Lightness | medium-dark (47%) |
| Chroma | muted (0.044) |
| Temperature | cool |
| Nearest name | YInMn Blue (#415A77) |
| Black text | 3.05:1 |
| White text | 6.86:1 |
Values
| HEX | #455D71 |
| RGB | rgb(69, 93, 113) |
| HSL | hsl(207, 24%, 36%) |
| OKLCH | oklch(46.7% 0.044 244) |
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 #455D71 | 6.86:1 | AA | Lc -88.7 | Fine for body text |
| Black text on #455D71 | 3.05:1 | AA large text | Lc 20.3 | Dividers and decoration only |
| #455D71 text on white | 6.86:1 | AA | Lc 83.7 | Fine for body text |
| #455D71 text on black | 3.05:1 | AA large text | Lc -18.2 | 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
#D3DAE0
oklch(88.5% 0.011 243.7)
-
Step 300
300
#B6C2CE
oklch(80.8% 0.022 248.1)
-
Step 400
400
#8FA3B5
oklch(70.6% 0.035 245.5)
-
Step 500
500
#748DA2
oklch(63.1% 0.043 243.8)
-
Step 600
600
#5C778D
oklch(55.6% 0.047 243.3)
-
Step 700
700 (this color)
#455D71
oklch(46.7% 0.044 244)
-
Step 800
800
#3E5162
oklch(42.6% 0.037 245.8)
-
Step 900
900
#354350
oklch(37.6% 0.029 246.7)
-
Step 950
950
#1F282F
oklch(27.1% 0.018 241.7)
#455D71 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) | #555D72 | 0.022 |
| Deuteranopia (no green cones) | #4F5871 | 0.019 |
| Tritanopia (no blue cones) | #366264 | 0.036 |
| Achromatopsia (no color) | #5A5A5A | 0.044 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #455D71
#455D71
oklch(46.7% 0.044 244)
- #6C5540
#6C5540
oklch(46.7% 0.044 63.8)
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 #455D71, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- YInMn Blue #415A77 ΔE 0.016
- Dusty Grape #545775 ΔE 0.029
- Slate #516572 ΔE 0.031
- Denim #3B638C ΔE 0.043
- Dusk #4E5481 ΔE 0.045
- Light Navy Blue #2E5A88 ΔE 0.048
- Petrol #005F6A ΔE 0.053
- Dusky Blue #475F94 ΔE 0.057
Use #455D71 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.