#4665DD
Closest named color: Royal Blue (#4169E1). oklch(55.1% 0.186 268.6), rgb(70, 101, 221).
Aa
White text reads best on this color (5.04:1).
About this color
#4665DD is a medium-dark, vivid blue. In OKLCH its lightness is 55%, its chroma 0.186 and its hue 269°. Its hue sits on the cool side of the wheel. The nearest named color is Royal Blue (#4169E1), ΔE 0.011 away. White text reads best on it, at 5.04:1.
| Hue family | Blues |
| Lightness | medium-dark (55%) |
| Chroma | vivid (0.186) |
| Temperature | cool |
| Nearest name | Royal Blue (#4169E1) |
| Black text | 4.16:1 |
| White text | 5.04:1 |
Values
| HEX | #4665DD |
| RGB | rgb(70, 101, 221) |
| HSL | hsl(228, 69%, 57%) |
| OKLCH | oklch(55.1% 0.186 268.6) |
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 #4665DD | 5.04:1 | AA | Lc -79.8 | Fine for body text |
| Black text on #4665DD | 4.16:1 | AA large text | Lc 29.7 | Dividers and decoration only |
| #4665DD text on white | 5.04:1 | AA | Lc 74.4 | Content text, not long reading |
| #4665DD text on black | 4.16:1 | AA large text | Lc -27.3 | 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
#F2F5FD
oklch(97% 0.011 269.6)
-
Step 100
100
#E3EAFB
oklch(93.7% 0.024 267.9)
-
Step 200
200
#CCD9F9
oklch(88.6% 0.046 267.9)
-
Step 300
300
#AABFF8
oklch(80.9% 0.084 268.8)
-
Step 400
400
#7E9CF4
oklch(70.8% 0.134 268.6)
-
Step 500
500
#5F80F0
oklch(63.1% 0.172 268.8)
-
Step 600
600 (this color)
#4665DD
oklch(55.1% 0.186 268.6)
-
Step 700
700
#3954C1
oklch(49% 0.173 268.6)
-
Step 800
800
#2F469C
oklch(42.7% 0.143 268.4)
-
Step 900
900
#293C7C
oklch(37.8% 0.111 268.3)
-
Step 950
950
#182349
oklch(26.9% 0.072 269)
#4665DD 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) | #0076E1 | 0.050 |
| Deuteranopia (no green cones) | #0068DB | 0.040 |
| Tritanopia (no blue cones) | #008297 | 0.152 |
| Achromatopsia (no color) | #6F6F6F | 0.187 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4665DD
#4665DD
oklch(55.1% 0.186 268.6)
- #8D6D00
#8D6D00
oklch(55.1% 0.113 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 #4665DD, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Royal Blue #4169E1 ΔE 0.011
- Neon Blue #4361EE ΔE 0.028
- Warm Blue #4B57DB ΔE 0.032
- Dark Periwinkle #665FD1 ΔE 0.045
- Cerulean Blue #056EEE ΔE 0.045
- Azul #1D5DEC ΔE 0.047
- Slate Blue #6A5ACD ΔE 0.055
- Iris #6258C4 ΔE 0.056
Use #4665DD 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.