#455AE5
Closest named color: Warm Blue (#4B57DB). oklch(53.7% 0.21 270.9), rgb(69, 90, 229).
Aa
White text reads best on this color (5.45:1).
About this color
#455AE5 is a medium-dark, vivid blue. In OKLCH its lightness is 54%, its chroma 0.210 and its hue 271°. Its hue sits on the cool side of the wheel. The nearest named color is Warm Blue (#4B57DB), ΔE 0.017 away. White text reads best on it, at 5.45:1.
| Hue family | Blues |
| Lightness | medium-dark (54%) |
| Chroma | vivid (0.210) |
| Temperature | cool |
| Nearest name | Warm Blue (#4B57DB) |
| Black text | 3.84:1 |
| White text | 5.45:1 |
Values
| HEX | #455AE5 |
| RGB | rgb(69, 90, 229) |
| HSL | hsl(232, 75%, 58%) |
| OKLCH | oklch(53.7% 0.21 270.9) |
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 #455AE5 | 5.45:1 | AA | Lc -82.0 | Fine for body text |
| Black text on #455AE5 | 3.84:1 | AA large text | Lc 27.4 | Dividers and decoration only |
| #455AE5 text on white | 5.45:1 | AA | Lc 76.7 | Fine for body text |
| #455AE5 text on black | 3.84:1 | AA large text | Lc -25.1 | 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 600.
-
Step 50
50
#F2F5FE
oklch(97% 0.012 271.3)
-
Step 100
100
#E3E9FD
oklch(93.5% 0.028 272.5)
-
Step 200
200
#CCD8FD
oklch(88.5% 0.053 271.1)
-
Step 300
300
#AABEFE
oklch(81% 0.094 270.8)
-
Step 400
400
#7E99FE
oklch(70.7% 0.151 270.8)
-
Step 500
500
#607CFC
oklch(63.2% 0.192 270.7)
-
Step 600
600 (this color)
#455AE5
oklch(53.7% 0.21 270.9)
-
Step 700
700
#3C4ECD
oklch(49.1% 0.196 271)
-
Step 800
800
#3141A6
oklch(42.7% 0.162 270.9)
-
Step 900
900
#2A3983
oklch(37.7% 0.125 270.6)
-
Step 950
950
#19224D
oklch(27.1% 0.08 271.2)
#455AE5 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) | #0071EA | 0.059 |
| Deuteranopia (no green cones) | #0062E2 | 0.042 |
| Tritanopia (no blue cones) | #007D97 | 0.168 |
| Achromatopsia (no color) | #696969 | 0.211 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #455AE5
#455AE5
oklch(53.7% 0.21 270.9)
- #866A00
#866A00
oklch(53.7% 0.11 90.4)
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 #455AE5, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Warm Blue #4B57DB ΔE 0.017
- Neon Blue #4361EE ΔE 0.021
- Azul #1D5DEC ΔE 0.034
- Royal Blue #4169E1 ΔE 0.035
- Bright Blue #0165FC ΔE 0.053
- Cerulean Blue #056EEE ΔE 0.054
- Dark Periwinkle #665FD1 ΔE 0.056
- Electric Blue #0652FF ΔE 0.061
Use #455AE5 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.