#2A7DE0
Closest named color: Clear Blue (#247AFD). oklch(59.3% 0.17 255.5), rgb(42, 125, 224).
Aa
Black text reads best on this color (5.10:1).
About this color
#2A7DE0 is a medium-dark, vivid blue. In OKLCH its lightness is 59%, its chroma 0.170 and its hue 255°. Its hue sits on the cool side of the wheel. The nearest named color is Clear Blue (#247AFD), ΔE 0.045 away. Black text reads best on it, at 5.10:1.
| Hue family | Blues |
| Lightness | medium-dark (59%) |
| Chroma | vivid (0.170) |
| Temperature | cool |
| Nearest name | Clear Blue (#247AFD) |
| Black text | 5.10:1 |
| White text | 4.11:1 |
Values
| HEX | #2A7DE0 |
| RGB | rgb(42, 125, 224) |
| HSL | hsl(213, 75%, 52%) |
| OKLCH | oklch(59.3% 0.17 255.5) |
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 #2A7DE0 | 4.11:1 | AA large text | Lc -73.2 | Content text, not long reading |
| Black text on #2A7DE0 | 5.10:1 | AA | Lc 36.3 | Non-text elements, placeholder text |
| #2A7DE0 text on white | 4.11:1 | AA large text | Lc 67.7 | Content text, not long reading |
| #2A7DE0 text on black | 5.10:1 | AA | Lc -33.9 | 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
#F1F6FC
oklch(97.1% 0.01 252.8)
-
Step 100
100
#E0EBF9
oklch(93.6% 0.022 254.4)
-
Step 200
200
#C7DBF6
oklch(88.5% 0.043 255.9)
-
Step 300
300
#A0C3F2
oklch(80.8% 0.077 255.9)
-
Step 400
400
#6BA3EB
oklch(70.7% 0.122 255.2)
-
Step 500
500
#418AE5
oklch(63.1% 0.155 255.4)
-
Step 600
600 (this color)
#2A7DE0
oklch(59.3% 0.17 255.5)
-
Step 700
700
#0B5EB7
oklch(49% 0.158 255.6)
-
Step 800
800
#104E94
oklch(42.8% 0.13 255.3)
-
Step 900
900
#164176
oklch(37.6% 0.102 255.6)
-
Step 950
950
#0E2745
oklch(27.1% 0.064 254.6)
#2A7DE0 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) | #4986E4 | 0.036 |
| Deuteranopia (no green cones) | #2176DE | 0.020 |
| Tritanopia (no blue cones) | #0095A3 | 0.130 |
| Achromatopsia (no color) | #7D7D7D | 0.170 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2A7DE0
#2A7DE0
oklch(59.3% 0.17 255.5)
- #A87200
#A87200
oklch(59.3% 0.125 76)
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 #2A7DE0, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Clear Blue #247AFD ΔE 0.045
- Water Blue #0E87CC ΔE 0.045
- Cerulean Blue #056EEE ΔE 0.050
- Windows Blue #3778BF ΔE 0.050
- Royal Blue #4169E1 ΔE 0.051
- Dark Sky Blue #448EE4 ΔE 0.052
- Dodger Blue #1E90FF ΔE 0.063
- Soft Blue #6488EA ΔE 0.065
Use #2A7DE0 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.