#455B74
Closest named color: YInMn Blue (#415A77). oklch(46.4% 0.049 252.1), rgb(69, 91, 116).
Aa
White text reads best on this color (6.99:1).
About this color
#455B74 is a medium-dark, muted blue. In OKLCH its lightness is 46%, its chroma 0.049 and its hue 252°. 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 6.99:1.
| Hue family | Blues |
| Lightness | medium-dark (46%) |
| Chroma | muted (0.049) |
| Temperature | cool |
| Nearest name | YInMn Blue (#415A77) |
| Black text | 3.00:1 |
| White text | 6.99:1 |
Values
| HEX | #455B74 |
| RGB | rgb(69, 91, 116) |
| HSL | hsl(212, 25%, 36%) |
| OKLCH | oklch(46.4% 0.049 252.1) |
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 #455B74 | 6.99:1 | AA | Lc -89.1 | Fine for body text |
| Black text on #455B74 | 3.00:1 | AA large text | Lc 19.8 | Dividers and decoration only |
| #455B74 text on white | 6.99:1 | AA | Lc 84.2 | Fine for body text |
| #455B74 text on black | 3.00:1 | AA large text | Lc -17.8 | 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
#90A3B8
oklch(70.8% 0.038 251)
-
Step 500
500
#758CA7
oklch(63.2% 0.049 252.7)
-
Step 600
600
#5D7692
oklch(55.7% 0.053 251.6)
-
Step 700
700 (this color)
#455B74
oklch(46.4% 0.049 252.1)
-
Step 800
800
#3F5165
oklch(42.8% 0.04 251.4)
-
Step 900
900
#354352
oklch(37.7% 0.032 250.4)
-
Step 950
950
#1F2730
oklch(26.9% 0.02 251.6)
#455B74 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) | #525C75 | 0.019 |
| Deuteranopia (no green cones) | #4C5773 | 0.014 |
| Tritanopia (no blue cones) | #356163 | 0.043 |
| Achromatopsia (no color) | #595959 | 0.049 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #455B74
#455B74
oklch(46.4% 0.049 252.1)
- #6A553A
#6A553A
oklch(46.4% 0.049 73.1)
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 #455B74, 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 0.024
- Dusk #4E5481 ΔE 0.036
- Slate #516572 ΔE 0.037
- Denim #3B638C ΔE 0.040
- Light Navy Blue #2E5A88 ΔE 0.041
- Denim Blue #3B5B92 ΔE 0.050
- Dusky Blue #475F94 ΔE 0.052
Use #455B74 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.