#2979EF
Closest named color: Clear Blue (#247AFD). oklch(59.4% 0.194 258.8), rgb(41, 121, 239).
Aa
Black text reads best on this color (5.07:1).
About this color
#2979EF is a medium-dark, vivid blue. In OKLCH its lightness is 59%, its chroma 0.194 and its hue 259°. Its hue sits on the cool side of the wheel. The nearest named color is Clear Blue (#247AFD), ΔE 0.021 away. Black text reads best on it, at 5.07:1.
| Hue family | Blues |
| Lightness | medium-dark (59%) |
| Chroma | vivid (0.194) |
| Temperature | cool |
| Nearest name | Clear Blue (#247AFD) |
| Black text | 5.07:1 |
| White text | 4.13:1 |
Values
| HEX | #2979EF |
| RGB | rgb(41, 121, 239) |
| HSL | hsl(216, 86%, 55%) |
| OKLCH | oklch(59.4% 0.194 258.8) |
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 #2979EF | 4.13:1 | AA large text | Lc -73.4 | Content text, not long reading |
| Black text on #2979EF | 5.07:1 | AA | Lc 36.2 | Non-text elements, placeholder text |
| #2979EF text on white | 4.13:1 | AA large text | Lc 67.9 | Content text, not long reading |
| #2979EF text on black | 5.07:1 | AA | Lc -33.8 | 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 500.
-
Step 50
50
#F0F6FE
oklch(97.1% 0.012 255.5)
-
Step 100
100
#DFEBFD
oklch(93.6% 0.028 258.4)
-
Step 200
200
#C5DBFD
oklch(88.6% 0.053 259)
-
Step 300
300
#9BC2FE
oklch(80.8% 0.095 258.8)
-
Step 400
400
#63A0FE
oklch(70.7% 0.152 258.8)
-
Step 500
500 (this color)
#2979EF
oklch(59.4% 0.194 258.8)
-
Step 600
600
#056BEB
oklch(55.7% 0.21 258.7)
-
Step 700
700
#0059C8
oklch(49.1% 0.188 258.7)
-
Step 800
800
#0249A5
oklch(42.8% 0.161 258.7)
-
Step 900
900
#0F3E83
oklch(37.7% 0.126 258.9)
-
Step 950
950
#0B254D
oklch(27% 0.081 259)
#2979EF 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) | #2E86F3 | 0.034 |
| Deuteranopia (no green cones) | #0074ED | 0.021 |
| Tritanopia (no blue cones) | #0096A9 | 0.148 |
| Achromatopsia (no color) | #7D7D7D | 0.194 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2979EF
#2979EF
oklch(59.4% 0.194 258.8)
- #A67400
#A67400
oklch(59.5% 0.124 78.6)
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 #2979EF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Clear Blue #247AFD ΔE 0.021
- Cerulean Blue #056EEE ΔE 0.033
- Royal Blue #4169E1 ΔE 0.043
- Neon Blue #4361EE ΔE 0.057
- Bright Blue #0165FC ΔE 0.057
- Dodger Blue #1E90FF ΔE 0.061
- Cornflower #6A79F7 ΔE 0.063
- Dark Sky Blue #448EE4 ΔE 0.066
Use #2979EF 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.