#2B599F
Closest named color: Denim Blue (#3B5B92). oklch(46.9% 0.124 258.7), rgb(43, 89, 159).
Aa
White text reads best on this color (6.92:1).
About this color
#2B599F is a medium-dark, moderately saturated blue. In OKLCH its lightness is 47%, its chroma 0.124 and its hue 259°. Its hue sits on the cool side of the wheel. The nearest named color is Denim Blue (#3B5B92), ΔE 0.028 away. White text reads best on it, at 6.92:1.
| Hue family | Blues |
| Lightness | medium-dark (47%) |
| Chroma | moderately saturated (0.124) |
| Temperature | cool |
| Nearest name | Denim Blue (#3B5B92) |
| Black text | 3.03:1 |
| White text | 6.92:1 |
Values
| HEX | #2B599F |
| RGB | rgb(43, 89, 159) |
| HSL | hsl(216, 57%, 40%) |
| OKLCH | oklch(46.9% 0.124 258.7) |
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 #2B599F | 6.92:1 | AA | Lc -88.6 | Fine for body text |
| Black text on #2B599F | 3.03:1 | AA large text | Lc 20.4 | Dividers and decoration only |
| #2B599F text on white | 6.92:1 | AA | Lc 83.6 | Fine for body text |
| #2B599F text on black | 3.03:1 | AA large text | Lc -18.3 | 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
#F2F6FB
oklch(97.2% 0.008 253.9)
-
Step 100
100
#E3EAF6
oklch(93.5% 0.018 261.3)
-
Step 200
200
#CCDAF0
oklch(88.5% 0.034 259.4)
-
Step 300
300
#A9C2E8
oklch(80.8% 0.061 258.7)
-
Step 400
400
#7CA2DD
oklch(70.8% 0.097 259)
-
Step 500
500
#5A8AD3
oklch(63.2% 0.122 258.5)
-
Step 600
600
#3F72C0
oklch(55.5% 0.134 258.7)
-
Step 700
700 (this color)
#2B599F
oklch(46.9% 0.124 258.7)
-
Step 800
800
#294E86
oklch(42.6% 0.103 258.5)
-
Step 900
900
#26416C
oklch(37.6% 0.081 259.3)
-
Step 950
950
#17273F
oklch(27.2% 0.05 258.3)
#2B599F 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) | #3760A2 | 0.025 |
| Deuteranopia (no green cones) | #22559E | 0.015 |
| Tritanopia (no blue cones) | #006974 | 0.097 |
| Achromatopsia (no color) | #5A5A5A | 0.124 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2B599F
#2B599F
oklch(46.9% 0.124 258.7)
- #785300
#785300
oklch(47% 0.098 78.8)
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 #2B599F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Denim Blue #3B5B92 ΔE 0.028
- Dusk Blue #26538D ΔE 0.033
- Light Navy Blue #2E5A88 ΔE 0.038
- Dusky Blue #475F94 ΔE 0.042
- Peacock Blue #016795 ΔE 0.049
- Denim #3B638C ΔE 0.050
- Twilight #4E518B ΔE 0.051
- Mid Blue #276AB3 ΔE 0.053
Use #2B599F 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.