#276DDE
Closest named color: Royal Blue (#4169E1). oklch(55.7% 0.186 259.9), rgb(39, 109, 222).
Aa
White text reads best on this color (4.85:1).
About this color
#276DDE is a medium-dark, vivid blue. In OKLCH its lightness is 56%, its chroma 0.186 and its hue 260°. Its hue sits on the cool side of the wheel. The nearest named color is Royal Blue (#4169E1), ΔE 0.022 away. White text reads best on it, at 4.85:1.
| Hue family | Blues |
| Lightness | medium-dark (56%) |
| Chroma | vivid (0.186) |
| Temperature | cool |
| Nearest name | Royal Blue (#4169E1) |
| Black text | 4.32:1 |
| White text | 4.85:1 |
Values
| HEX | #276DDE |
| RGB | rgb(39, 109, 222) |
| HSL | hsl(217, 73%, 51%) |
| OKLCH | oklch(55.7% 0.186 259.9) |
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 #276DDE | 4.85:1 | AA | Lc -78.5 | Fine for body text |
| Black text on #276DDE | 4.32:1 | AA large text | Lc 31.0 | Non-text elements, placeholder text |
| #276DDE text on white | 4.85:1 | AA | Lc 73.1 | Content text, not long reading |
| #276DDE text on black | 4.32:1 | AA large text | Lc -28.6 | 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
#F1F6FD
oklch(97.1% 0.011 256.7)
-
Step 100
100
#E1EBFB
oklch(93.7% 0.024 259.8)
-
Step 200
200
#C7DAF9
oklch(88.4% 0.048 260.2)
-
Step 300
300
#A1C2F7
oklch(80.9% 0.084 259.8)
-
Step 400
400
#6EA0F4
oklch(70.7% 0.135 260.3)
-
Step 500
500
#4686EF
oklch(63.1% 0.171 259.8)
-
Step 600
600 (this color)
#276DDE
oklch(55.7% 0.186 259.9)
-
Step 700
700
#1A5AC1
oklch(49.1% 0.174 260)
-
Step 800
800
#184A9C
oklch(42.7% 0.144 260)
-
Step 900
900
#1A3F7C
oklch(37.7% 0.112 259.9)
-
Step 950
950
#102548
oklch(26.9% 0.071 260)
#276DDE 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) | #207AE2 | 0.033 |
| Deuteranopia (no green cones) | #006ADC | 0.018 |
| Tritanopia (no blue cones) | #00899B | 0.144 |
| Achromatopsia (no color) | #717171 | 0.187 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #276DDE
#276DDE
oklch(55.7% 0.186 259.9)
- #976A00
#976A00
oklch(55.7% 0.116 79.3)
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 #276DDE, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Royal Blue #4169E1 ΔE 0.022
- Cerulean Blue #056EEE ΔE 0.026
- Neon Blue #4361EE ΔE 0.042
- Azul #1D5DEC ΔE 0.046
- Bright Blue #0165FC ΔE 0.052
- Clear Blue #247AFD ΔE 0.055
- Warm Blue #4B57DB ΔE 0.056
- Windows Blue #3778BF ΔE 0.061
Use #276DDE 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.