#2871A4
Closest named color: Muted Blue (#3B719F). oklch(52.8% 0.107 243.3), rgb(40, 113, 164).
Aa
White text reads best on this color (5.26:1).
About this color
#2871A4 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 53%, its chroma 0.107 and its hue 243°. Its hue sits on the cool side of the wheel. The nearest named color is Muted Blue (#3B719F), ΔE 0.016 away. White text reads best on it, at 5.26:1.
| Hue family | Blues |
| Lightness | medium-dark (53%) |
| Chroma | moderately saturated (0.107) |
| Temperature | cool |
| Nearest name | Muted Blue (#3B719F) |
| Black text | 3.98:1 |
| White text | 5.26:1 |
Values
| HEX | #2871A4 |
| RGB | rgb(40, 113, 164) |
| HSL | hsl(205, 61%, 40%) |
| OKLCH | oklch(52.8% 0.107 243.3) |
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 #2871A4 | 5.26:1 | AA | Lc -81.2 | Fine for body text |
| Black text on #2871A4 | 3.98:1 | AA large text | Lc 28.2 | Dividers and decoration only |
| #2871A4 text on white | 5.26:1 | AA | Lc 75.8 | Fine for body text |
| #2871A4 text on black | 3.98:1 | AA large text | Lc -25.9 | 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
#F2F6F9
oklch(97.1% 0.006 239.8)
-
Step 100
100
#E2EBF3
oklch(93.6% 0.015 244.7)
-
Step 200
200
#CBDCEA
oklch(88.6% 0.027 242.8)
-
Step 300
300
#A7C5DE
oklch(81% 0.048 243.5)
-
Step 400
400
#76A7CD
oklch(70.8% 0.077 242.4)
-
Step 500
500
#5090C1
oklch(63.1% 0.099 243.4)
-
Step 600
600 (this color)
#2871A4
oklch(52.8% 0.107 243.3)
-
Step 700
700
#236695
oklch(49.1% 0.1 243.5)
-
Step 800
800
#1F5378
oklch(42.6% 0.082 243.2)
-
Step 900
900
#204561
oklch(37.7% 0.064 243.6)
-
Step 950
950
#142939
oklch(27.2% 0.04 243)
#2871A4 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) | #5972A6 | 0.048 |
| Deuteranopia (no green cones) | #4867A3 | 0.037 |
| Tritanopia (no blue cones) | #007D83 | 0.074 |
| Achromatopsia (no color) | #6C6C6C | 0.107 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2871A4
#2871A4
oklch(52.8% 0.107 243.3)
- #965C1C
#965C1C
oklch(52.9% 0.107 63.5)
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 #2871A4, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Muted Blue #3B719F ΔE 0.016
- Flat Blue #3C73A8 ΔE 0.019
- Ocean Blue #03719C ΔE 0.021
- Nice Blue #107AB0 ΔE 0.028
- Sea Blue #047495 ΔE 0.032
- French Blue #436BAD ΔE 0.033
- Mid Blue #276AB3 ΔE 0.034
- Dull Blue #49759C ΔE 0.035
Use #2871A4 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.