#4276DB
Closest named color: Royal Blue (#4169E1). oklch(58.2% 0.164 262.1), rgb(66, 118, 219).
Aa
Black text reads best on this color (4.84:1).
About this color
#4276DB is a medium-dark, vivid blue. In OKLCH its lightness is 58%, its chroma 0.164 and its hue 262°. Its hue sits on the cool side of the wheel. The nearest named color is Royal Blue (#4169E1), ΔE 0.035 away. Black text reads best on it, at 4.84:1.
| Hue family | Blues |
| Lightness | medium-dark (58%) |
| Chroma | vivid (0.164) |
| Temperature | cool |
| Nearest name | Royal Blue (#4169E1) |
| Black text | 4.84:1 |
| White text | 4.33:1 |
Values
| HEX | #4276DB |
| RGB | rgb(66, 118, 219) |
| HSL | hsl(220, 68%, 56%) |
| OKLCH | oklch(58.2% 0.164 262.1) |
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 #4276DB | 4.33:1 | AA large text | Lc -75.1 | Fine for body text |
| Black text on #4276DB | 4.84:1 | AA | Lc 34.4 | Non-text elements, placeholder text |
| #4276DB text on white | 4.33:1 | AA large text | Lc 69.7 | Content text, not long reading |
| #4276DB text on black | 4.84:1 | AA | Lc -32.0 | Non-text elements, placeholder text |
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
#F2F6FC
oklch(97.2% 0.009 258.3)
-
Step 100
100
#E2EAF9
oklch(93.5% 0.022 263.2)
-
Step 200
200
#CBDAF5
oklch(88.6% 0.041 262.3)
-
Step 300
300
#A7C1F1
oklch(80.8% 0.074 262.5)
-
Step 400
400
#78A0EA
oklch(70.7% 0.118 262.1)
-
Step 500
500
#5586E4
oklch(63% 0.152 262.2)
-
Step 600
600 (this color)
#4276DB
oklch(58.2% 0.164 262.1)
-
Step 700
700
#2D5BB6
oklch(49.1% 0.153 262.2)
-
Step 800
800
#264B93
oklch(42.7% 0.126 262.1)
-
Step 900
900
#233F75
oklch(37.6% 0.099 262.1)
-
Step 950
950
#152545
oklch(26.9% 0.064 262.8)
#4276DB 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) | #4281DF | 0.029 |
| Deuteranopia (no green cones) | #2073D9 | 0.027 |
| Tritanopia (no blue cones) | #008E9E | 0.132 |
| Achromatopsia (no color) | #797979 | 0.165 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4276DB
#4276DB
oklch(58.2% 0.164 262.1)
- #9E7300
#9E7300
oklch(58.3% 0.12 82.4)
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 #4276DB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Royal Blue #4169E1 ΔE 0.035
- Windows Blue #3778BF ΔE 0.046
- Cerulean Blue #056EEE ΔE 0.050
- Clear Blue #247AFD ΔE 0.053
- Water Blue #0E87CC ΔE 0.059
- Neon Blue #4361EE ΔE 0.061
- Cornflower #6A79F7 ΔE 0.064
- Dark Sky Blue #448EE4 ΔE 0.064
Use #4276DB 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.