#2B647F
Closest named color: Denim (#3B638C). oklch(47.7% 0.073 231.7), rgb(43, 100, 127).
Aa
White text reads best on this color (6.49:1).
About this color
#2B647F is a medium-dark, moderately saturated blue. In OKLCH its lightness is 48%, its chroma 0.073 and its hue 232°. Its hue sits on the cool side of the wheel. The nearest named color is Denim (#3B638C), ΔE 0.028 away. White text reads best on it, at 6.49:1.
| Hue family | Blues |
| Lightness | medium-dark (48%) |
| Chroma | moderately saturated (0.073) |
| Temperature | cool |
| Nearest name | Denim (#3B638C) |
| Black text | 3.23:1 |
| White text | 6.49:1 |
Values
| HEX | #2B647F |
| RGB | rgb(43, 100, 127) |
| HSL | hsl(199, 49%, 33%) |
| OKLCH | oklch(47.7% 0.073 231.7) |
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 #2B647F | 6.49:1 | AA | Lc -87.1 | Fine for body text |
| Black text on #2B647F | 3.23:1 | AA large text | Lc 22.0 | Dividers and decoration only |
| #2B647F text on white | 6.49:1 | AA | Lc 82.0 | Fine for body text |
| #2B647F text on black | 3.23:1 | AA large text | Lc -19.9 | 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 700.
-
Step 50
50
#F2F6F8
oklch(97.1% 0.005 228.8)
-
Step 100
100
#E3EBF0
oklch(93.5% 0.011 234.8)
-
Step 200
200
#CDDCE4
oklch(88.6% 0.02 230.7)
-
Step 300
300
#ABC5D4
oklch(80.9% 0.035 233.2)
-
Step 400
400
#7DA7BE
oklch(70.6% 0.057 232.5)
-
Step 500
500
#5A92AE
oklch(63.2% 0.072 231.2)
-
Step 600
600
#3E7B9A
oklch(55.5% 0.079 232.8)
-
Step 700
700 (this color)
#2B647F
oklch(47.7% 0.073 231.7)
-
Step 800
800
#28556B
oklch(42.8% 0.061 231.9)
-
Step 900
900
#264656
oklch(37.7% 0.047 231.6)
-
Step 950
950
#172933
oklch(27% 0.03 233.8)
#2B647F 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) | #576380 | 0.050 |
| Deuteranopia (no green cones) | #4B5A7F | 0.043 |
| Tritanopia (no blue cones) | #006B6D | 0.047 |
| Achromatopsia (no color) | #5E5E5E | 0.074 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2B647F
#2B647F
oklch(47.7% 0.073 231.7)
- #7E5035
#7E5035
oklch(47.7% 0.074 50.6)
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 #2B647F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Denim #3B638C ΔE 0.028
- YInMn Blue #415A77 ΔE 0.034
- Peacock Blue #016795 ΔE 0.037
- Light Navy Blue #2E5A88 ΔE 0.037
- Petrol #005F6A ΔE 0.045
- Slate #516572 ΔE 0.045
- Dark Aqua #05696B ΔE 0.046
- Denim Blue #3B5B92 ΔE 0.049
Use #2B647F 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.