#455DCF
Closest named color: Warm Blue (#4B57DB). oklch(52.5% 0.178 270.2), rgb(69, 93, 207).
Aa
White text reads best on this color (5.64:1).
About this color
#455DCF is a medium-dark, vivid blue. In OKLCH its lightness is 52%, its chroma 0.178 and its hue 270°. Its hue sits on the cool side of the wheel. The nearest named color is Warm Blue (#4B57DB), ΔE 0.024 away. White text reads best on it, at 5.64:1.
| Hue family | Blues |
| Lightness | medium-dark (52%) |
| Chroma | vivid (0.178) |
| Temperature | cool |
| Nearest name | Warm Blue (#4B57DB) |
| Black text | 3.71:1 |
| White text | 5.64:1 |
Values
| HEX | #455DCF |
| RGB | rgb(69, 93, 207) |
| HSL | hsl(230, 59%, 54%) |
| OKLCH | oklch(52.5% 0.178 270.2) |
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 #455DCF | 5.64:1 | AA | Lc -83.1 | Fine for body text |
| Black text on #455DCF | 3.71:1 | AA large text | Lc 26.2 | Dividers and decoration only |
| #455DCF text on white | 5.64:1 | AA | Lc 77.8 | Fine for body text |
| #455DCF text on black | 3.71:1 | AA large text | Lc -24.0 | 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
#E4EAFA
oklch(93.7% 0.023 269.4)
-
Step 200
200
#CED8F7
oklch(88.4% 0.044 271.3)
-
Step 300
300
#ACBFF5
oklch(80.9% 0.079 269.5)
-
Step 400
400
#829BF0
oklch(70.6% 0.128 270.4)
-
Step 500
500
#6480EB
oklch(63% 0.163 270.1)
-
Step 600
600 (this color)
#455DCF
oklch(52.5% 0.178 270.2)
-
Step 700
700
#3F55BD
oklch(49.2% 0.165 270.2)
-
Step 800
800
#334699
oklch(42.7% 0.137 270)
-
Step 900
900
#2C3C79
oklch(37.7% 0.105 269.7)
-
Step 950
950
#1A2347
oklch(26.9% 0.068 270.7)
#455DCF 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) | #006ED3 | 0.052 |
| Deuteranopia (no green cones) | #0061CD | 0.043 |
| Tritanopia (no blue cones) | #00788D | 0.145 |
| Achromatopsia (no color) | #676767 | 0.178 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #455DCF
#455DCF
oklch(52.5% 0.178 270.2)
- #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 #455DCF, closest first.
No curated palette has a color within ΔE 0.04 of #455DCF.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Warm Blue #4B57DB ΔE 0.024
- Royal Blue #4169E1 ΔE 0.038
- Iris #6258C4 ΔE 0.042
- Dark Periwinkle #665FD1 ΔE 0.046
- Neon Blue #4361EE ΔE 0.048
- Slate Blue #6A5ACD ΔE 0.051
- Azul #1D5DEC ΔE 0.054
- Light Indigo #6D5ACF ΔE 0.055
Use #455DCF 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.