#2373A6
Closest named color: Muted Blue (#3B719F). oklch(53.3% 0.11 241.7), rgb(35, 115, 166).
Aa
White text reads best on this color (5.15:1).
About this color
#2373A6 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 53%, its chroma 0.110 and its hue 242°. Its hue sits on the cool side of the wheel. The nearest named color is Muted Blue (#3B719F), ΔE 0.019 away. White text reads best on it, at 5.15:1.
| Hue family | Blues |
| Lightness | medium-dark (53%) |
| Chroma | moderately saturated (0.110) |
| Temperature | cool |
| Nearest name | Muted Blue (#3B719F) |
| Black text | 4.07:1 |
| White text | 5.15:1 |
Values
| HEX | #2373A6 |
| RGB | rgb(35, 115, 166) |
| HSL | hsl(203, 65%, 39%) |
| OKLCH | oklch(53.3% 0.11 241.7) |
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 #2373A6 | 5.15:1 | AA | Lc -80.5 | Fine for body text |
| Black text on #2373A6 | 4.07:1 | AA large text | Lc 28.9 | Dividers and decoration only |
| #2373A6 text on white | 5.15:1 | AA | Lc 75.1 | Fine for body text |
| #2373A6 text on black | 4.07:1 | AA large text | Lc -26.6 | 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
#E2EBF3
oklch(93.6% 0.015 244.7)
-
Step 200
200
#CADCEA
oklch(88.5% 0.027 241.2)
-
Step 300
300
#A5C5DE
oklch(80.8% 0.049 241.8)
-
Step 400
400
#74A7CE
oklch(70.7% 0.079 242.1)
-
Step 500
500
#4C91C1
oklch(63.2% 0.101 241.2)
-
Step 600
600 (this color)
#2373A6
oklch(53.3% 0.11 241.7)
-
Step 700
700
#1D6795
oklch(49.2% 0.102 241.3)
-
Step 800
800
#1B5479
oklch(42.8% 0.084 241.5)
-
Step 900
900
#1D4561
oklch(37.5% 0.066 242)
-
Step 950
950
#122939
oklch(27% 0.042 241)
#2373A6 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) | #5B74A8 | 0.053 |
| Deuteranopia (no green cones) | #4968A5 | 0.041 |
| Tritanopia (no blue cones) | #008085 | 0.075 |
| Achromatopsia (no color) | #6D6D6D | 0.110 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2373A6
#2373A6
oklch(53.3% 0.11 241.7)
- #995C1C
#995C1C
oklch(53.3% 0.11 61.9)
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 #2373A6, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Muted Blue #3B719F ΔE 0.019
- Flat Blue #3C73A8 ΔE 0.019
- Ocean Blue #03719C ΔE 0.021
- Nice Blue #107AB0 ΔE 0.022
- Sea Blue #047495 ΔE 0.032
- Dull Blue #49759C ΔE 0.035
- French Blue #436BAD ΔE 0.036
- Mid Blue #276AB3 ΔE 0.036
Use #2373A6 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.