#2F688B
Closest named color: Denim (#3B638C). oklch(49.5% 0.082 238.5), rgb(47, 104, 139).
Aa
White text reads best on this color (6.04:1).
About this color
#2F688B is a medium-dark, moderately saturated blue. In OKLCH its lightness is 49%, its chroma 0.082 and its hue 238°. Its hue sits on the cool side of the wheel. The nearest named color is Denim (#3B638C), ΔE 0.018 away. White text reads best on it, at 6.04:1.
| Hue family | Blues |
| Lightness | medium-dark (49%) |
| Chroma | moderately saturated (0.082) |
| Temperature | cool |
| Nearest name | Denim (#3B638C) |
| Black text | 3.47:1 |
| White text | 6.04:1 |
Values
| HEX | #2F688B |
| RGB | rgb(47, 104, 139) |
| HSL | hsl(203, 49%, 36%) |
| OKLCH | oklch(49.5% 0.082 238.5) |
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 #2F688B | 6.04:1 | AA | Lc -85.2 | Fine for body text |
| Black text on #2F688B | 3.47:1 | AA large text | Lc 24.1 | Dividers and decoration only |
| #2F688B text on white | 6.04:1 | AA | Lc 80.0 | Fine for body text |
| #2F688B text on black | 3.47:1 | AA large text | Lc -21.8 | 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
#E3EBF1
oklch(93.6% 0.012 239.9)
-
Step 200
200
#CCDCE6
oklch(88.5% 0.022 235)
-
Step 300
300
#AAC5D8
oklch(80.9% 0.04 238.7)
-
Step 400
400
#7CA7C4
oklch(70.8% 0.063 238.3)
-
Step 500
500
#5991B5
oklch(63.2% 0.08 238.1)
-
Step 600
600
#3C7AA1
oklch(55.5% 0.088 238.7)
-
Step 700
700 (this color)
#2F688B
oklch(49.5% 0.082 238.5)
-
Step 800
800
#275470
oklch(42.7% 0.068 238.5)
-
Step 900
900
#25465A
oklch(37.8% 0.052 236.9)
-
Step 950
950
#162935
oklch(27.1% 0.033 237.5)
#2F688B 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) | #58688D | 0.046 |
| Deuteranopia (no green cones) | #4B5F8A | 0.037 |
| Tritanopia (no blue cones) | #007174 | 0.058 |
| Achromatopsia (no color) | #636363 | 0.082 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2F688B
#2F688B
oklch(49.5% 0.082 238.5)
- #84562F
#84562F
oklch(49.6% 0.082 59.5)
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 #2F688B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Denim #3B638C ΔE 0.018
- Peacock Blue #016795 ΔE 0.027
- Ocean Blue #03719C ΔE 0.035
- Sea Blue #047495 ΔE 0.037
- Dusky Blue #475F94 ΔE 0.040
- Muted Blue #3B719F ΔE 0.041
- Light Navy Blue #2E5A88 ΔE 0.042
- Denim Blue #3B5B92 ΔE 0.043
Use #2F688B 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.