#455CC4
Closest named color: Warm Blue (#4B57DB). oklch(51.5% 0.164 270.3), rgb(69, 92, 196).
Aa
White text reads best on this color (5.86:1).
About this color
#455CC4 is a medium-dark, vivid blue. In OKLCH its lightness is 51%, its chroma 0.164 and its hue 270°. Its hue sits on the cool side of the wheel. The nearest named color is Warm Blue (#4B57DB), ΔE 0.039 away. White text reads best on it, at 5.86:1.
| Hue family | Blues |
| Lightness | medium-dark (51%) |
| Chroma | vivid (0.164) |
| Temperature | cool |
| Nearest name | Warm Blue (#4B57DB) |
| Black text | 3.58:1 |
| White text | 5.86:1 |
Values
| HEX | #455CC4 |
| RGB | rgb(69, 92, 196) |
| HSL | hsl(229, 52%, 52%) |
| OKLCH | oklch(51.5% 0.164 270.3) |
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 #455CC4 | 5.86:1 | AA | Lc -84.2 | Fine for body text |
| Black text on #455CC4 | 3.58:1 | AA large text | Lc 25.1 | Dividers and decoration only |
| #455CC4 text on white | 5.86:1 | AA | Lc 79.0 | Fine for body text |
| #455CC4 text on black | 3.58:1 | AA large text | Lc -22.8 | 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 700.
-
Step 50
50
#F3F5FD
oklch(97.1% 0.011 274.9)
-
Step 100
100
#E4EAFA
oklch(93.7% 0.023 269.4)
-
Step 200
200
#CED8F7
oklch(88.4% 0.044 271.3)
-
Step 300
300
#ADBFF5
oklch(81% 0.079 270.3)
-
Step 400
400
#829BF0
oklch(70.6% 0.128 270.4)
-
Step 500
500
#6580EB
oklch(63.1% 0.163 270.5)
-
Step 600
600
#4E67D9
oklch(55.7% 0.176 270.4)
-
Step 700
700 (this color)
#455CC4
oklch(51.5% 0.164 270.3)
-
Step 800
800
#344698
oklch(42.7% 0.135 270.4)
-
Step 900
900
#2D3C79
oklch(37.8% 0.105 270.3)
-
Step 950
950
#1A2347
oklch(26.9% 0.068 270.7)
#455CC4 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) | #176BC8 | 0.047 |
| Deuteranopia (no green cones) | #005FC2 | 0.045 |
| Tritanopia (no blue cones) | #007587 | 0.138 |
| Achromatopsia (no color) | #656565 | 0.164 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #455CC4
#455CC4
oklch(51.5% 0.164 270.3)
- #7F6400
#7F6400
oklch(51.6% 0.105 90.1)
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 #455CC4, closest first.
No curated palette has a color within ΔE 0.04 of #455CC4.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Warm Blue #4B57DB ΔE 0.039
- Iris #6258C4 ΔE 0.040
- Dark Periwinkle #665FD1 ΔE 0.051
- Royal Blue #4169E1 ΔE 0.053
- Mid Blue #276AB3 ΔE 0.053
- Slate Blue #6A5ACD ΔE 0.054
- French Blue #436BAD ΔE 0.058
- Light Indigo #6D5ACF ΔE 0.059
Use #455CC4 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.