#2F61B3
Closest named color: Mid Blue (#276AB3). oklch(50.3% 0.141 259.8), rgb(47, 97, 179).
Aa
White text reads best on this color (6.03:1).
About this color
#2F61B3 is a medium-dark, vivid blue. In OKLCH its lightness is 50%, its chroma 0.141 and its hue 260°. Its hue sits on the cool side of the wheel. The nearest named color is Mid Blue (#276AB3), ΔE 0.025 away. White text reads best on it, at 6.03:1.
| Hue family | Blues |
| Lightness | medium-dark (50%) |
| Chroma | vivid (0.141) |
| Temperature | cool |
| Nearest name | Mid Blue (#276AB3) |
| Black text | 3.48:1 |
| White text | 6.03:1 |
Values
| HEX | #2F61B3 |
| RGB | rgb(47, 97, 179) |
| HSL | hsl(217, 58%, 44%) |
| OKLCH | oklch(50.3% 0.141 259.8) |
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 #2F61B3 | 6.03:1 | AA | Lc -85.0 | Fine for body text |
| Black text on #2F61B3 | 3.48:1 | AA large text | Lc 24.3 | Dividers and decoration only |
| #2F61B3 text on white | 6.03:1 | AA | Lc 79.8 | Fine for body text |
| #2F61B3 text on black | 3.48:1 | AA large text | Lc -22.0 | 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
#F2F6FC
oklch(97.2% 0.009 258.3)
-
Step 100
100
#E2EAF7
oklch(93.5% 0.02 260.2)
-
Step 200
200
#CBDAF3
oklch(88.5% 0.038 260.7)
-
Step 300
300
#A7C2ED
oklch(80.9% 0.068 259.6)
-
Step 400
400
#78A1E5
oklch(70.7% 0.11 260.2)
-
Step 500
500
#5588DD
oklch(63.1% 0.14 260.1)
-
Step 600
600
#3970CB
oklch(55.5% 0.153 259.9)
-
Step 700
700 (this color)
#2F61B3
oklch(50.3% 0.141 259.8)
-
Step 800
800
#254D8E
oklch(42.8% 0.117 259.7)
-
Step 900
900
#234171
oklch(37.8% 0.09 259.4)
-
Step 950
950
#152642
oklch(27% 0.057 259.9)
#2F61B3 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) | #3769B6 | 0.024 |
| Deuteranopia (no green cones) | #1A5DB1 | 0.020 |
| Tritanopia (no blue cones) | #007481 | 0.111 |
| Achromatopsia (no color) | #636363 | 0.141 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2F61B3
#2F61B3
oklch(50.3% 0.141 259.8)
- #835C00
#835C00
oklch(50.3% 0.104 79.8)
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 #2F61B3, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mid Blue #276AB3 ΔE 0.025
- French Blue #436BAD ΔE 0.039
- Denim Blue #3B5B92 ΔE 0.053
- Dusky Blue #475F94 ΔE 0.053
- Peacock Blue #016795 ΔE 0.059
- Flat Blue #3C73A8 ΔE 0.060
- Muted Blue #3B719F ΔE 0.063
- Denim #3B638C ΔE 0.065
Use #2F61B3 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.