#455AB8
Closest named color: Iris (#6258C4). oklch(50.2% 0.15 270.7), rgb(69, 90, 184).
Aa
White text reads best on this color (6.16:1).
About this color
#455AB8 is a medium-dark, vivid blue. In OKLCH its lightness is 50%, its chroma 0.150 and its hue 271°. Its hue sits on the cool side of the wheel. The nearest named color is Iris (#6258C4), ΔE 0.045 away. White text reads best on it, at 6.16:1.
| Hue family | Blues |
| Lightness | medium-dark (50%) |
| Chroma | vivid (0.150) |
| Temperature | cool |
| Nearest name | Iris (#6258C4) |
| Black text | 3.40:1 |
| White text | 6.16:1 |
Values
| HEX | #455AB8 |
| RGB | rgb(69, 90, 184) |
| HSL | hsl(229, 45%, 50%) |
| OKLCH | oklch(50.2% 0.15 270.7) |
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 #455AB8 | 6.16:1 | AA | Lc -85.6 | Fine for body text |
| Black text on #455AB8 | 3.40:1 | AA large text | Lc 23.6 | Dividers and decoration only |
| #455AB8 text on white | 6.16:1 | AA | Lc 80.5 | Fine for body text |
| #455AB8 text on black | 3.40:1 | AA large text | Lc -21.4 | 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
#E4E9F8
oklch(93.5% 0.021 271.2)
-
Step 200
200
#CFD8F5
oklch(88.4% 0.041 271.9)
-
Step 300
300
#AFBFF0
oklch(80.9% 0.072 270.6)
-
Step 400
400
#859CE9
oklch(70.6% 0.116 270.6)
-
Step 500
500
#6882E2
oklch(63.1% 0.147 270.3)
-
Step 600
600
#5169D0
oklch(55.6% 0.161 270.5)
-
Step 700
700 (this color)
#455AB8
oklch(50.2% 0.15 270.7)
-
Step 800
800
#364792
oklch(42.6% 0.125 270.7)
-
Step 900
900
#2F3D74
oklch(37.8% 0.095 270.5)
-
Step 950
950
#1B2444
oklch(27% 0.061 270.1)
#455AB8 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) | #2567BB | 0.041 |
| Deuteranopia (no green cones) | #025CB6 | 0.046 |
| Tritanopia (no blue cones) | #007080 | 0.128 |
| Achromatopsia (no color) | #616161 | 0.150 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #455AB8
#455AB8
oklch(50.2% 0.15 270.7)
- #7A6000
#7A6000
oklch(50.1% 0.102 90.2)
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 #455AB8, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Iris #6258C4 ΔE 0.045
- Mid Blue #276AB3 ΔE 0.049
- French Blue #436BAD ΔE 0.052
- Warm Blue #4B57DB ΔE 0.056
- Dusky Blue #475F94 ΔE 0.062
- Slate Blue #6A5ACD ΔE 0.063
- Dark Periwinkle #665FD1 ΔE 0.063
- Denim Blue #3B5B92 ΔE 0.064
Use #455AB8 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.