#2471AA
Closest named color: Flat Blue (#3C73A8). oklch(53% 0.116 245.3), rgb(36, 113, 170).
Aa
White text reads best on this color (5.22:1).
About this color
#2471AA is a medium-dark, moderately saturated blue. In OKLCH its lightness is 53%, its chroma 0.116 and its hue 245°. Its hue sits on the cool side of the wheel. The nearest named color is Flat Blue (#3C73A8), ΔE 0.020 away. White text reads best on it, at 5.22:1.
| Hue family | Blues |
| Lightness | medium-dark (53%) |
| Chroma | moderately saturated (0.116) |
| Temperature | cool |
| Nearest name | Flat Blue (#3C73A8) |
| Black text | 4.01:1 |
| White text | 5.22:1 |
Values
| HEX | #2471AA |
| RGB | rgb(36, 113, 170) |
| HSL | hsl(206, 65%, 40%) |
| OKLCH | oklch(53% 0.116 245.3) |
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 #2471AA | 5.22:1 | AA | Lc -80.9 | Fine for body text |
| Black text on #2471AA | 4.01:1 | AA large text | Lc 28.5 | Dividers and decoration only |
| #2471AA text on white | 5.22:1 | AA | Lc 75.6 | Fine for body text |
| #2471AA text on black | 4.01:1 | AA large text | Lc -26.2 | 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
#CADCEB
oklch(88.6% 0.028 243.1)
-
Step 300
300
#A5C5E1
oklch(80.9% 0.053 244.9)
-
Step 400
400
#74A6D2
oklch(70.7% 0.084 245.9)
-
Step 500
500
#4D8FC6
oklch(63% 0.107 245.8)
-
Step 600
600 (this color)
#2471AA
oklch(53% 0.116 245.3)
-
Step 700
700
#1F6599
oklch(49% 0.107 245.4)
-
Step 800
800
#1C537C
oklch(42.7% 0.089 244.9)
-
Step 900
900
#1E4564
oklch(37.8% 0.069 245.1)
-
Step 950
950
#12283B
oklch(26.9% 0.045 246.6)
#2471AA 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) | #5673AC | 0.047 |
| Deuteranopia (no green cones) | #4367A9 | 0.035 |
| Tritanopia (no blue cones) | #007F85 | 0.083 |
| Achromatopsia (no color) | #6C6C6C | 0.116 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2471AA
#2471AA
oklch(53% 0.116 245.3)
- #995C09
#995C09
oklch(53.2% 0.116 65.4)
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 #2471AA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Flat Blue #3C73A8 ΔE 0.020
- Muted Blue #3B719F ΔE 0.023
- Nice Blue #107AB0 ΔE 0.025
- Mid Blue #276AB3 ΔE 0.027
- Ocean Blue #03719C ΔE 0.027
- French Blue #436BAD ΔE 0.029
- Sea Blue #047495 ΔE 0.040
- Windows Blue #3778BF ΔE 0.040
Use #2471AA 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.