#455599
Closest named color: Denim Blue (#3B5B92). oklch(47% 0.111 271.6), rgb(69, 85, 153).
Aa
White text reads best on this color (6.97:1).
About this color
#455599 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 47%, its chroma 0.111 and its hue 272°. Its hue sits on the cool side of the wheel. The nearest named color is Denim Blue (#3B5B92), ΔE 0.025 away. White text reads best on it, at 6.97:1.
| Hue family | Blues |
| Lightness | medium-dark (47%) |
| Chroma | moderately saturated (0.111) |
| Temperature | cool |
| Nearest name | Denim Blue (#3B5B92) |
| Black text | 3.01:1 |
| White text | 6.97:1 |
Values
| HEX | #455599 |
| RGB | rgb(69, 85, 153) |
| HSL | hsl(229, 38%, 44%) |
| OKLCH | oklch(47% 0.111 271.6) |
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 #455599 | 6.97:1 | AA | Lc -88.9 | Fine for body text |
| Black text on #455599 | 3.01:1 | AA large text | Lc 20.1 | Dividers and decoration only |
| #455599 text on white | 6.97:1 | AA | Lc 84.0 | Fine for body text |
| #455599 text on black | 3.01:1 | AA large text | Lc -18.0 | 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
#F4F5FA
oklch(97.1% 0.007 277.2)
-
Step 100
100
#E6E9F5
oklch(93.5% 0.016 274.8)
-
Step 200
200
#D2D8EE
oklch(88.4% 0.031 273.6)
-
Step 300
300
#B4BFE4
oklch(80.8% 0.054 272.1)
-
Step 400
400
#8D9ED7
oklch(70.8% 0.086 271.3)
-
Step 500
500
#7285CC
oklch(63.2% 0.109 271.6)
-
Step 600
600
#5B6DB9
oklch(55.6% 0.12 271.9)
-
Step 700
700 (this color)
#455599
oklch(47% 0.111 271.6)
-
Step 800
800
#3D4B81
oklch(42.8% 0.091 271.1)
-
Step 900
900
#343F68
oklch(37.8% 0.072 271.3)
-
Step 950
950
#1E253D
oklch(27% 0.046 270.7)
#455599 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) | #385D9C | 0.025 |
| Deuteranopia (no green cones) | #2E5698 | 0.026 |
| Tritanopia (no blue cones) | #1B646F | 0.100 |
| Achromatopsia (no color) | #595959 | 0.112 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #455599
#455599
oklch(47% 0.111 271.6)
- #6F5800
#6F5800
oklch(47% 0.096 91.1)
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 #455599, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Denim Blue #3B5B92 ΔE 0.025
- Twilight #4E518B ΔE 0.025
- Dusky Blue #475F94 ΔE 0.032
- Dusk #4E5481 ΔE 0.040
- Dusk Blue #26538D ΔE 0.042
- Light Navy Blue #2E5A88 ΔE 0.043
- Denim #3B638C ΔE 0.050
- Blueberry #464196 ΔE 0.053
Use #455599 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.