#2F7CBD
Closest named color: Windows Blue (#3778BF). oklch(57% 0.125 247.8), rgb(47, 124, 189).
Aa
Black text reads best on this color (4.73:1).
About this color
#2F7CBD is a medium-dark, moderately saturated blue. In OKLCH its lightness is 57%, its chroma 0.125 and its hue 248°. Its hue sits on the cool side of the wheel. The nearest named color is Windows Blue (#3778BF), ΔE 0.013 away. Black text reads best on it, at 4.73:1.
| Hue family | Blues |
| Lightness | medium-dark (57%) |
| Chroma | moderately saturated (0.125) |
| Temperature | cool |
| Nearest name | Windows Blue (#3778BF) |
| Black text | 4.73:1 |
| White text | 4.43:1 |
Values
| HEX | #2F7CBD |
| RGB | rgb(47, 124, 189) |
| HSL | hsl(207, 60%, 46%) |
| OKLCH | oklch(57% 0.125 247.8) |
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 #2F7CBD | 4.43:1 | AA large text | Lc -75.9 | Fine for body text |
| Black text on #2F7CBD | 4.73:1 | AA | Lc 33.7 | Non-text elements, placeholder text |
| #2F7CBD text on white | 4.43:1 | AA large text | Lc 70.4 | Content text, not long reading |
| #2F7CBD text on black | 4.73:1 | AA | Lc -31.3 | 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
#F2F6FA
oklch(97.1% 0.007 247.9)
-
Step 100
100
#E2EBF4
oklch(93.6% 0.016 248)
-
Step 200
200
#C9DCED
oklch(88.6% 0.031 245.1)
-
Step 300
300
#A4C5E4
oklch(81% 0.057 246.9)
-
Step 400
400
#72A6D6
oklch(70.7% 0.09 247.2)
-
Step 500
500
#4B8FCB
oklch(63.2% 0.114 247.4)
-
Step 600
600 (this color)
#2F7CBD
oklch(57% 0.125 247.8)
-
Step 700
700
#1C649F
oklch(49% 0.117 248.2)
-
Step 800
800
#1A5281
oklch(42.7% 0.097 248)
-
Step 900
900
#1C4467
oklch(37.6% 0.075 247.8)
-
Step 950
950
#12283C
oklch(26.9% 0.047 247.8)
#2F7CBD 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) | #5E7FC0 | 0.046 |
| Deuteranopia (no green cones) | #4A72BC | 0.033 |
| Tritanopia (no blue cones) | #008C94 | 0.091 |
| Achromatopsia (no color) | #787878 | 0.125 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2F7CBD
#2F7CBD
oklch(57% 0.125 247.8)
- #A76701
#A76701
oklch(57.1% 0.125 67.9)
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 #2F7CBD, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Windows Blue #3778BF ΔE 0.013
- Nice Blue #107AB0 ΔE 0.027
- Steel Blue #4682B4 ΔE 0.032
- Water Blue #0E87CC ΔE 0.034
- Cool Blue #4984B8 ΔE 0.035
- Flat Blue #3C73A8 ΔE 0.037
- Blue NCS #118AB2 ΔE 0.048
- French Blue #436BAD ΔE 0.049
Use #2F7CBD 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.