#4364BB
Closest named color: Mid Blue (#276AB3). oklch(52.4% 0.142 266), rgb(67, 100, 187).
Aa
White text reads best on this color (5.55:1).
About this color
#4364BB is a medium-dark, vivid blue. In OKLCH its lightness is 52%, its chroma 0.142 and its hue 266°. Its hue sits on the cool side of the wheel. The nearest named color is Mid Blue (#276AB3), ΔE 0.032 away. White text reads best on it, at 5.55:1.
| Hue family | Blues |
| Lightness | medium-dark (52%) |
| Chroma | vivid (0.142) |
| Temperature | cool |
| Nearest name | Mid Blue (#276AB3) |
| Black text | 3.77:1 |
| White text | 5.55:1 |
Values
| HEX | #4364BB |
| RGB | rgb(67, 100, 187) |
| HSL | hsl(224, 47%, 50%) |
| OKLCH | oklch(52.4% 0.142 266) |
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 #4364BB | 5.55:1 | AA | Lc -82.8 | Fine for body text |
| Black text on #4364BB | 3.77:1 | AA large text | Lc 26.6 | Dividers and decoration only |
| #4364BB text on white | 5.55:1 | AA | Lc 77.5 | Fine for body text |
| #4364BB text on black | 3.77:1 | AA large text | Lc -24.3 | 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
#F3F5FB
oklch(97% 0.008 271.3)
-
Step 100
100
#E4EAF7
oklch(93.6% 0.019 266)
-
Step 200
200
#CED9F1
oklch(88.4% 0.035 266)
-
Step 300
300
#ADC0EB
oklch(80.8% 0.065 266.3)
-
Step 400
400
#839FE1
oklch(70.7% 0.102 266.2)
-
Step 500
500
#6486D8
oklch(63.1% 0.13 265.8)
-
Step 600
600 (this color)
#4364BB
oklch(52.4% 0.142 266)
-
Step 700
700
#3D5BAB
oklch(49% 0.133 266.2)
-
Step 800
800
#324B8A
oklch(42.7% 0.109 265.7)
-
Step 900
900
#2C3F6F
oklch(37.7% 0.086 266.1)
-
Step 950
950
#1A2541
oklch(27% 0.055 266.6)
#4364BB 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) | #396EBE | 0.027 |
| Deuteranopia (no green cones) | #2363B9 | 0.029 |
| Tritanopia (no blue cones) | #007886 | 0.120 |
| Achromatopsia (no color) | #686868 | 0.142 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4364BB
#4364BB
oklch(52.4% 0.142 266)
- #856400
#856400
oklch(52.2% 0.107 85.9)
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 #4364BB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mid Blue #276AB3 ΔE 0.032
- French Blue #436BAD ΔE 0.032
- Iris #6258C4 ΔE 0.051
- Windows Blue #3778BF ΔE 0.053
- Flat Blue #3C73A8 ΔE 0.056
- Royal Blue #4169E1 ΔE 0.059
- Dark Periwinkle #665FD1 ΔE 0.059
- Dusky Blue #475F94 ΔE 0.061
Use #4364BB 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.