#455BD4
Closest named color: Warm Blue (#4B57DB). oklch(52.5% 0.187 270.7), rgb(69, 91, 212).
Aa
White text reads best on this color (5.67:1).
About this color
#455BD4 is a medium-dark, vivid blue. In OKLCH its lightness is 52%, its chroma 0.187 and its hue 271°. Its hue sits on the cool side of the wheel. The nearest named color is Warm Blue (#4B57DB), ΔE 0.015 away. White text reads best on it, at 5.67:1.
| Hue family | Blues |
| Lightness | medium-dark (52%) |
| Chroma | vivid (0.187) |
| Temperature | cool |
| Nearest name | Warm Blue (#4B57DB) |
| Black text | 3.70:1 |
| White text | 5.67:1 |
Values
| HEX | #455BD4 |
| RGB | rgb(69, 91, 212) |
| HSL | hsl(231, 62%, 55%) |
| OKLCH | oklch(52.5% 0.187 270.7) |
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 #455BD4 | 5.67:1 | AA | Lc -83.2 | Fine for body text |
| Black text on #455BD4 | 3.70:1 | AA large text | Lc 26.1 | Dividers and decoration only |
| #455BD4 text on white | 5.67:1 | AA | Lc 77.9 | Fine for body text |
| #455BD4 text on black | 3.70:1 | AA large text | Lc -23.8 | 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 600.
-
Step 50
50
#F2F5FD
oklch(97% 0.011 269.6)
-
Step 100
100
#E3E9FB
oklch(93.5% 0.025 271.1)
-
Step 200
200
#CDD8F9
oklch(88.4% 0.047 270.8)
-
Step 300
300
#ACBEF8
oklch(80.8% 0.085 271.1)
-
Step 400
400
#819BF4
oklch(70.7% 0.134 270.4)
-
Step 500
500
#647FF0
oklch(63.2% 0.171 270.7)
-
Step 600
600 (this color)
#455BD4
oklch(52.5% 0.187 270.7)
-
Step 700
700
#3E53C1
oklch(49.1% 0.173 270.5)
-
Step 800
800
#33449C
oklch(42.6% 0.144 270.8)
-
Step 900
900
#2C3B7C
oklch(37.7% 0.111 270.5)
-
Step 950
950
#1A2349
oklch(27.1% 0.071 270.9)
#455BD4 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) | #006DD8 | 0.053 |
| Deuteranopia (no green cones) | #0060D2 | 0.043 |
| Tritanopia (no blue cones) | #00798F | 0.153 |
| Achromatopsia (no color) | #676767 | 0.187 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #455BD4
#455BD4
oklch(52.5% 0.187 270.7)
- #826700
#826700
oklch(52.6% 0.107 90.6)
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 #455BD4, closest first.
No curated palette has a color within ΔE 0.04 of #455BD4.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Warm Blue #4B57DB ΔE 0.015
- Royal Blue #4169E1 ΔE 0.038
- Neon Blue #4361EE ΔE 0.042
- Iris #6258C4 ΔE 0.046
- Dark Periwinkle #665FD1 ΔE 0.047
- Azul #1D5DEC ΔE 0.048
- Slate Blue #6A5ACD ΔE 0.052
- Light Indigo #6D5ACF ΔE 0.056
Use #455BD4 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.