#2E7DD3
Closest named color: Windows Blue (#3778BF). oklch(58.6% 0.152 253.5), rgb(46, 125, 211).
Aa
Black text reads best on this color (4.99:1).
About this color
#2E7DD3 is a medium-dark, vivid blue. In OKLCH its lightness is 59%, its chroma 0.152 and its hue 253°. Its hue sits on the cool side of the wheel. The nearest named color is Windows Blue (#3778BF), ΔE 0.031 away. Black text reads best on it, at 4.99:1.
| Hue family | Blues |
| Lightness | medium-dark (59%) |
| Chroma | vivid (0.152) |
| Temperature | cool |
| Nearest name | Windows Blue (#3778BF) |
| Black text | 4.99:1 |
| White text | 4.20:1 |
Values
| HEX | #2E7DD3 |
| RGB | rgb(46, 125, 211) |
| HSL | hsl(211, 65%, 50%) |
| OKLCH | oklch(58.6% 0.152 253.5) |
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 #2E7DD3 | 4.20:1 | AA large text | Lc -74.1 | Content text, not long reading |
| Black text on #2E7DD3 | 4.99:1 | AA | Lc 35.5 | Non-text elements, placeholder text |
| #2E7DD3 text on white | 4.20:1 | AA large text | Lc 68.6 | Content text, not long reading |
| #2E7DD3 text on black | 4.99:1 | AA | Lc -33.1 | 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
#E1EBF7
oklch(93.6% 0.019 252.9)
-
Step 200
200
#C8DBF2
oklch(88.4% 0.038 253.2)
-
Step 300
300
#A2C4ED
oklch(81% 0.069 253.4)
-
Step 400
400
#6FA4E3
oklch(70.7% 0.109 253.5)
-
Step 500
500
#468CDB
oklch(63.2% 0.139 253.2)
-
Step 600
600 (this color)
#2E7DD3
oklch(58.6% 0.152 253.5)
-
Step 700
700
#1561AE
oklch(49.2% 0.141 253.5)
-
Step 800
800
#154F8D
oklch(42.6% 0.118 253.7)
-
Step 900
900
#194270
oklch(37.6% 0.091 253.6)
-
Step 950
950
#102742
oklch(27% 0.058 253.9)
#2E7DD3 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) | #5384D6 | 0.039 |
| Deuteranopia (no green cones) | #3775D1 | 0.021 |
| Tritanopia (no blue cones) | #00919E | 0.113 |
| Achromatopsia (no color) | #7B7B7B | 0.152 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2E7DD3
#2E7DD3
oklch(58.6% 0.152 253.5)
- #A76E00
#A76E00
oklch(58.4% 0.124 73.4)
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 #2E7DD3, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Windows Blue #3778BF ΔE 0.031
- Water Blue #0E87CC ΔE 0.032
- Cool Blue #4984B8 ΔE 0.054
- Dark Sky Blue #448EE4 ΔE 0.055
- Steel Blue #4682B4 ΔE 0.055
- Nice Blue #107AB0 ΔE 0.058
- Royal Blue #4169E1 ΔE 0.058
- Cerulean Blue #056EEE ΔE 0.063
Use #2E7DD3 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.