#455A73
Closest named color: YInMn Blue (#415A77). oklch(46.1% 0.048 253.2), rgb(69, 90, 115).
Aa
White text reads best on this color (7.08:1).
About this color
#455A73 is a medium-dark, muted blue. In OKLCH its lightness is 46%, its chroma 0.048 and its hue 253°. Its hue sits on the cool side of the wheel. The nearest named color is YInMn Blue (#415A77), ΔE 0.008 away. White text reads best on it, at 7.08:1.
| Hue family | Blues |
| Lightness | medium-dark (46%) |
| Chroma | muted (0.048) |
| Temperature | cool |
| Nearest name | YInMn Blue (#415A77) |
| Black text | 2.96:1 |
| White text | 7.08:1 |
Values
| HEX | #455A73 |
| RGB | rgb(69, 90, 115) |
| HSL | hsl(213, 25%, 36%) |
| OKLCH | oklch(46.1% 0.048 253.2) |
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 #455A73 | 7.08:1 | AAA | Lc -89.5 | Fine for body text |
| Black text on #455A73 | 2.96:1 | Fails | Lc 19.5 | Dividers and decoration only |
| #455A73 text on white | 7.08:1 | AAA | Lc 84.5 | Fine for body text |
| #455A73 text on black | 2.96:1 | Fails | Lc -17.4 | 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
#E7EAEE
oklch(93.6% 0.006 255.5)
-
Step 200
200
#D3DAE2
oklch(88.5% 0.013 251.6)
-
Step 300
300
#B6C2D0
oklch(80.9% 0.024 252.2)
-
Step 400
400
#91A2B8
oklch(70.6% 0.038 254.9)
-
Step 500
500
#758CA6
oklch(63.1% 0.047 251.7)
-
Step 600
600
#5E7592
oklch(55.5% 0.053 254.5)
-
Step 700
700 (this color)
#455A73
oklch(46.1% 0.048 253.2)
-
Step 800
800
#3F5065
oklch(42.6% 0.041 254)
-
Step 900
900
#364352
oklch(37.8% 0.031 252.3)
-
Step 950
950
#202730
oklch(27% 0.02 254.8)
#455A73 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) | #515B74 | 0.018 |
| Deuteranopia (no green cones) | #4B5672 | 0.014 |
| Tritanopia (no blue cones) | #356062 | 0.044 |
| Achromatopsia (no color) | #585858 | 0.048 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #455A73
#455A73
oklch(46.1% 0.048 253.2)
- #69543A
#69543A
oklch(46% 0.048 72.1)
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 #455A73, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- YInMn Blue #415A77 ΔE 0.008
- Dusty Grape #545775 ΔE 0.023
- Dusk #4E5481 ΔE 0.035
- Slate #516572 ΔE 0.040
- Light Navy Blue #2E5A88 ΔE 0.042
- Denim #3B638C ΔE 0.043
- Denim Blue #3B5B92 ΔE 0.051
- Dusky Blue #475F94 ΔE 0.053
Use #455A73 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.