#2D7BD0
Closest named color: Windows Blue (#3778BF). oklch(57.9% 0.151 253.5), rgb(45, 123, 208).
Aa
Black text reads best on this color (4.85:1).
About this color
#2D7BD0 is a medium-dark, vivid blue. In OKLCH its lightness is 58%, its chroma 0.151 and its hue 254°. Its hue sits on the cool side of the wheel. The nearest named color is Windows Blue (#3778BF), ΔE 0.026 away. Black text reads best on it, at 4.85:1.
| Hue family | Blues |
| Lightness | medium-dark (58%) |
| Chroma | vivid (0.151) |
| Temperature | cool |
| Nearest name | Windows Blue (#3778BF) |
| Black text | 4.85:1 |
| White text | 4.32:1 |
Values
| HEX | #2D7BD0 |
| RGB | rgb(45, 123, 208) |
| HSL | hsl(211, 64%, 50%) |
| OKLCH | oklch(57.9% 0.151 253.5) |
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 #2D7BD0 | 4.32:1 | AA large text | Lc -75.0 | Fine for body text |
| Black text on #2D7BD0 | 4.85:1 | AA | Lc 34.6 | Non-text elements, placeholder text |
| #2D7BD0 text on white | 4.32:1 | AA large text | Lc 69.5 | Content text, not long reading |
| #2D7BD0 text on black | 4.85:1 | AA | Lc -32.1 | 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
#A2C4EC
oklch(80.9% 0.068 252.7)
-
Step 400
400
#6FA4E3
oklch(70.7% 0.109 253.5)
-
Step 500
500
#478CDB
oklch(63.2% 0.139 253.5)
-
Step 600
600 (this color)
#2D7BD0
oklch(57.9% 0.151 253.5)
-
Step 700
700
#1661AD
oklch(49.1% 0.14 253.3)
-
Step 800
800
#164F8C
oklch(42.6% 0.116 253.6)
-
Step 900
900
#1A4270
oklch(37.6% 0.091 254)
-
Step 950
950
#102742
oklch(27% 0.058 253.9)
#2D7BD0 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) | #5181D3 | 0.037 |
| Deuteranopia (no green cones) | #3673CE | 0.021 |
| Tritanopia (no blue cones) | #008F9B | 0.113 |
| Achromatopsia (no color) | #797979 | 0.151 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2D7BD0
#2D7BD0
oklch(57.9% 0.151 253.5)
- #A56D00
#A56D00
oklch(58% 0.123 73.7)
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 #2D7BD0, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Windows Blue #3778BF ΔE 0.026
- Water Blue #0E87CC ΔE 0.035
- Nice Blue #107AB0 ΔE 0.053
- Cool Blue #4984B8 ΔE 0.054
- Steel Blue #4682B4 ΔE 0.055
- Royal Blue #4169E1 ΔE 0.057
- Mid Blue #276AB3 ΔE 0.061
- Dark Sky Blue #448EE4 ΔE 0.062
Use #2D7BD0 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.