#2171AE
Closest named color: Mid Blue (#276AB3). oklch(53.2% 0.122 246.4), rgb(33, 113, 174).
Aa
White text reads best on this color (5.20:1).
About this color
#2171AE is a medium-dark, moderately saturated blue. In OKLCH its lightness is 53%, its chroma 0.122 and its hue 246°. Its hue sits on the cool side of the wheel. The nearest named color is Mid Blue (#276AB3), ΔE 0.023 away. White text reads best on it, at 5.20:1.
| Hue family | Blues |
| Lightness | medium-dark (53%) |
| Chroma | moderately saturated (0.122) |
| Temperature | cool |
| Nearest name | Mid Blue (#276AB3) |
| Black text | 4.03:1 |
| White text | 5.20:1 |
Values
| HEX | #2171AE |
| RGB | rgb(33, 113, 174) |
| HSL | hsl(206, 68%, 41%) |
| OKLCH | oklch(53.2% 0.122 246.4) |
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 #2171AE | 5.20:1 | AA | Lc -80.8 | Fine for body text |
| Black text on #2171AE | 4.03:1 | AA large text | Lc 28.7 | Dividers and decoration only |
| #2171AE text on white | 5.20:1 | AA | Lc 75.4 | Fine for body text |
| #2171AE text on black | 4.03:1 | AA large text | Lc -26.3 | Dividers and decoration only |
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
#CADCED
oklch(88.6% 0.03 246.6)
-
Step 300
300
#A5C5E3
oklch(81% 0.055 246.8)
-
Step 400
400
#72A6D4
oklch(70.6% 0.087 246.1)
-
Step 500
500
#4B8FC9
oklch(63.1% 0.112 246.5)
-
Step 600
600 (this color)
#2171AE
oklch(53.2% 0.122 246.4)
-
Step 700
700
#1C659D
oklch(49.2% 0.113 246.6)
-
Step 800
800
#1A537F
oklch(42.8% 0.093 246)
-
Step 900
900
#1C4566
oklch(37.8% 0.073 245.8)
-
Step 950
950
#12283C
oklch(26.9% 0.047 247.8)
#2171AE 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) | #5474B1 | 0.047 |
| Deuteranopia (no green cones) | #4067AD | 0.033 |
| Tritanopia (no blue cones) | #008087 | 0.087 |
| Achromatopsia (no color) | #6D6D6D | 0.122 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2171AE
#2171AE
oklch(53.2% 0.122 246.4)
- #995C00
#995C00
oklch(53.2% 0.118 66.4)
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 #2171AE, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mid Blue #276AB3 ΔE 0.023
- Flat Blue #3C73A8 ΔE 0.023
- Nice Blue #107AB0 ΔE 0.025
- French Blue #436BAD ΔE 0.029
- Muted Blue #3B719F ΔE 0.029
- Ocean Blue #03719C ΔE 0.032
- Windows Blue #3778BF ΔE 0.037
- Sea Blue #047495 ΔE 0.045
Use #2171AE 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.