#455AB5
Closest named color: Iris (#6258C4). oklch(50% 0.146 270.6), rgb(69, 90, 181).
Aa
White text reads best on this color (6.20:1).
About this color
#455AB5 is a medium-dark, vivid blue. In OKLCH its lightness is 50%, its chroma 0.146 and its hue 271°. Its hue sits on the cool side of the wheel. The nearest named color is Iris (#6258C4), ΔE 0.047 away. White text reads best on it, at 6.20:1.
| Hue family | Blues |
| Lightness | medium-dark (50%) |
| Chroma | vivid (0.146) |
| Temperature | cool |
| Nearest name | Iris (#6258C4) |
| Black text | 3.38:1 |
| White text | 6.20:1 |
Values
| HEX | #455AB5 |
| RGB | rgb(69, 90, 181) |
| HSL | hsl(229, 45%, 49%) |
| OKLCH | oklch(50% 0.146 270.6) |
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 #455AB5 | 6.20:1 | AA | Lc -85.8 | Fine for body text |
| Black text on #455AB5 | 3.38:1 | AA large text | Lc 23.4 | Dividers and decoration only |
| #455AB5 text on white | 6.20:1 | AA | Lc 80.7 | Fine for body text |
| #455AB5 text on black | 3.38:1 | AA large text | Lc -21.2 | 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
#F3F5FC
oklch(97.1% 0.01 273.4)
-
Step 100
100
#E4EAF8
oklch(93.7% 0.02 267.3)
-
Step 200
200
#CFD8F4
oklch(88.4% 0.04 271.4)
-
Step 300
300
#AFBFEF
oklch(80.9% 0.07 270.4)
-
Step 400
400
#869CE7
oklch(70.6% 0.113 270.8)
-
Step 500
500
#6982E0
oklch(63.1% 0.144 270.6)
-
Step 600
600
#526ACE
oklch(55.7% 0.156 270.5)
-
Step 700
700 (this color)
#455AB5
oklch(50% 0.146 270.6)
-
Step 800
800
#374890
oklch(42.7% 0.12 270.6)
-
Step 900
900
#2F3D73
oklch(37.7% 0.094 270.4)
-
Step 950
950
#1C2443
oklch(27% 0.059 271.1)
#455AB5 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) | #2966B8 | 0.037 |
| Deuteranopia (no green cones) | #0E5CB3 | 0.043 |
| Tritanopia (no blue cones) | #006F7F | 0.125 |
| Achromatopsia (no color) | #616161 | 0.146 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #455AB5
#455AB5
oklch(50% 0.146 270.6)
- #796000
#796000
oklch(50% 0.102 90.9)
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 #455AB5, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Iris #6258C4 ΔE 0.047
- Mid Blue #276AB3 ΔE 0.048
- French Blue #436BAD ΔE 0.050
- Dusky Blue #475F94 ΔE 0.057
- Denim Blue #3B5B92 ΔE 0.059
- Warm Blue #4B57DB ΔE 0.061
- Slate Blue #6A5ACD ΔE 0.065
- Dark Periwinkle #665FD1 ΔE 0.066
Use #455AB5 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.