#455DB8
Closest named color: Mid Blue (#276AB3). oklch(50.8% 0.146 269.5), rgb(69, 93, 184).
Aa
White text reads best on this color (5.98:1).
About this color
#455DB8 is a medium-dark, vivid blue. In OKLCH its lightness is 51%, its chroma 0.146 and its hue 270°. Its hue sits on the cool side of the wheel. The nearest named color is Mid Blue (#276AB3), ΔE 0.043 away. White text reads best on it, at 5.98:1.
| Hue family | Blues |
| Lightness | medium-dark (51%) |
| Chroma | vivid (0.146) |
| Temperature | cool |
| Nearest name | Mid Blue (#276AB3) |
| Black text | 3.51:1 |
| White text | 5.98:1 |
Values
| HEX | #455DB8 |
| RGB | rgb(69, 93, 184) |
| HSL | hsl(227, 45%, 50%) |
| OKLCH | oklch(50.8% 0.146 269.5) |
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 #455DB8 | 5.98:1 | AA | Lc -84.8 | Fine for body text |
| Black text on #455DB8 | 3.51:1 | AA large text | Lc 24.4 | Dividers and decoration only |
| #455DB8 text on white | 5.98:1 | AA | Lc 79.6 | Fine for body text |
| #455DB8 text on black | 3.51:1 | AA large text | Lc -22.2 | 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
#CFD9F4
oklch(88.6% 0.039 269.4)
-
Step 300
300
#AEBFEF
oklch(80.8% 0.071 269.6)
-
Step 400
400
#849DE7
oklch(70.7% 0.112 269.2)
-
Step 500
500
#6783E0
oklch(63.2% 0.144 269.4)
-
Step 600
600
#4F6ACE
oklch(55.5% 0.157 269.4)
-
Step 700
700 (this color)
#455DB8
oklch(50.8% 0.146 269.5)
-
Step 800
800
#354890
oklch(42.6% 0.121 269.6)
-
Step 900
900
#2E3D73
oklch(37.6% 0.094 269.8)
-
Step 950
950
#1B2443
oklch(26.9% 0.059 269.9)
#455DB8 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) | #2D69BB | 0.036 |
| Deuteranopia (no green cones) | #145EB6 | 0.040 |
| Tritanopia (no blue cones) | #007282 | 0.124 |
| Achromatopsia (no color) | #636363 | 0.146 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #455DB8
#455DB8
oklch(50.8% 0.146 269.5)
- #7D6200
#7D6200
oklch(50.9% 0.104 89.8)
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 #455DB8, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mid Blue #276AB3 ΔE 0.043
- French Blue #436BAD ΔE 0.044
- Iris #6258C4 ΔE 0.045
- Warm Blue #4B57DB ΔE 0.058
- Dusky Blue #475F94 ΔE 0.059
- Dark Periwinkle #665FD1 ΔE 0.061
- Slate Blue #6A5ACD ΔE 0.062
- Denim Blue #3B5B92 ΔE 0.063
Use #455DB8 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.