#2F638F
Closest named color: Denim (#3B638C). oklch(48.5% 0.09 246.6), rgb(47, 99, 143).
Aa
White text reads best on this color (6.35:1).
About this color
#2F638F is a medium-dark, moderately saturated blue. In OKLCH its lightness is 48%, its chroma 0.090 and its hue 247°. Its hue sits on the cool side of the wheel. The nearest named color is Denim (#3B638C), ΔE 0.012 away. White text reads best on it, at 6.35:1.
| Hue family | Blues |
| Lightness | medium-dark (48%) |
| Chroma | moderately saturated (0.090) |
| Temperature | cool |
| Nearest name | Denim (#3B638C) |
| Black text | 3.30:1 |
| White text | 6.35:1 |
Values
| HEX | #2F638F |
| RGB | rgb(47, 99, 143) |
| HSL | hsl(208, 51%, 37%) |
| OKLCH | oklch(48.5% 0.09 246.6) |
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 #2F638F | 6.35:1 | AA | Lc -86.5 | Fine for body text |
| Black text on #2F638F | 3.30:1 | AA large text | Lc 22.6 | Dividers and decoration only |
| #2F638F text on white | 6.35:1 | AA | Lc 81.4 | Fine for body text |
| #2F638F text on black | 3.30:1 | AA large text | Lc -20.5 | 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
#F2F6F9
oklch(97.1% 0.006 239.8)
-
Step 100
100
#E3EBF2
oklch(93.6% 0.013 244.3)
-
Step 200
200
#CDDBE9
oklch(88.5% 0.025 248.1)
-
Step 300
300
#ABC4DC
oklch(80.9% 0.044 247.3)
-
Step 400
400
#7DA5CA
oklch(70.6% 0.07 246.9)
-
Step 500
500
#5B8FBD
oklch(63.2% 0.089 246.5)
-
Step 600
600
#3F78A9
oklch(55.6% 0.097 246.6)
-
Step 700
700 (this color)
#2F638F
oklch(48.5% 0.09 246.6)
-
Step 800
800
#295276
oklch(42.6% 0.076 247.2)
-
Step 900
900
#26445F
oklch(37.6% 0.059 247.2)
-
Step 950
950
#172838
oklch(27% 0.038 247.9)
#2F638F 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) | #506491 | 0.038 |
| Deuteranopia (no green cones) | #425B8E | 0.028 |
| Tritanopia (no blue cones) | #006E73 | 0.069 |
| Achromatopsia (no color) | #5F5F5F | 0.090 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2F638F
#2F638F
oklch(48.5% 0.09 246.6)
- #81541F
#81541F
oklch(48.6% 0.09 66.8)
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 #2F638F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Denim #3B638C ΔE 0.012
- Peacock Blue #016795 ΔE 0.023
- Denim Blue #3B5B92 ΔE 0.026
- Light Navy Blue #2E5A88 ΔE 0.027
- Dusky Blue #475F94 ΔE 0.029
- Ocean Blue #03719C ΔE 0.042
- YInMn Blue #415A77 ΔE 0.043
- Muted Blue #3B719F ΔE 0.048
Use #2F638F 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.