#4664CB
Closest named color: Royal Blue (#4169E1). oklch(53.6% 0.163 268.2), rgb(70, 100, 203).
Aa
White text reads best on this color (5.32:1).
About this color
#4664CB is a medium-dark, vivid blue. In OKLCH its lightness is 54%, its chroma 0.163 and its hue 268°. Its hue sits on the cool side of the wheel. The nearest named color is Royal Blue (#4169E1), ΔE 0.035 away. White text reads best on it, at 5.32:1.
| Hue family | Blues |
| Lightness | medium-dark (54%) |
| Chroma | vivid (0.163) |
| Temperature | cool |
| Nearest name | Royal Blue (#4169E1) |
| Black text | 3.94:1 |
| White text | 5.32:1 |
Values
| HEX | #4664CB |
| RGB | rgb(70, 100, 203) |
| HSL | hsl(226, 56%, 54%) |
| OKLCH | oklch(53.6% 0.163 268.2) |
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 #4664CB | 5.32:1 | AA | Lc -81.5 | Fine for body text |
| Black text on #4664CB | 3.94:1 | AA large text | Lc 27.9 | Dividers and decoration only |
| #4664CB text on white | 5.32:1 | AA | Lc 76.1 | Fine for body text |
| #4664CB text on black | 3.94:1 | AA large text | Lc -25.6 | 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
#F2F5FC
oklch(97% 0.01 267.4)
-
Step 100
100
#E4EAF9
oklch(93.7% 0.021 268.4)
-
Step 200
200
#CED9F5
oklch(88.6% 0.04 268.5)
-
Step 300
300
#ACC0F1
oklch(81% 0.073 267.4)
-
Step 400
400
#819DEA
oklch(70.6% 0.118 268.1)
-
Step 500
500
#6383E4
oklch(63.2% 0.15 268.2)
-
Step 600
600 (this color)
#4664CB
oklch(53.6% 0.163 268.2)
-
Step 700
700
#3D58B6
oklch(49.2% 0.152 268.3)
-
Step 800
800
#324893
oklch(42.6% 0.126 268.3)
-
Step 900
900
#2C3D75
oklch(37.7% 0.098 268.7)
-
Step 950
950
#1A2445
oklch(27% 0.063 269.2)
#4664CB 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) | #2871CF | 0.038 |
| Deuteranopia (no green cones) | #0065C9 | 0.043 |
| Tritanopia (no blue cones) | #007C8E | 0.135 |
| Achromatopsia (no color) | #6B6B6B | 0.163 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4664CB
#4664CB
oklch(53.6% 0.163 268.2)
- #886900
#886900
oklch(53.7% 0.11 88.2)
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 #4664CB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Royal Blue #4169E1 ΔE 0.035
- Warm Blue #4B57DB ΔE 0.041
- Dark Periwinkle #665FD1 ΔE 0.044
- Iris #6258C4 ΔE 0.044
- Mid Blue #276AB3 ΔE 0.051
- Slate Blue #6A5ACD ΔE 0.051
- French Blue #436BAD ΔE 0.054
- Neon Blue #4361EE ΔE 0.055
Use #4664CB 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.