#347AB1
Closest named color: Nice Blue (#107AB0). oklch(56.1% 0.11 245.4), rgb(52, 122, 177).
Aa
White text reads best on this color (4.60:1).
About this color
#347AB1 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 56%, its chroma 0.110 and its hue 245°. Its hue sits on the cool side of the wheel. The nearest named color is Nice Blue (#107AB0), ΔE 0.018 away. White text reads best on it, at 4.60:1.
| Hue family | Blues |
| Lightness | medium-dark (56%) |
| Chroma | moderately saturated (0.110) |
| Temperature | cool |
| Nearest name | Nice Blue (#107AB0) |
| Black text | 4.56:1 |
| White text | 4.60:1 |
Values
| HEX | #347AB1 |
| RGB | rgb(52, 122, 177) |
| HSL | hsl(206, 55%, 45%) |
| OKLCH | oklch(56.1% 0.11 245.4) |
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 #347AB1 | 4.60:1 | AA | Lc -77.1 | Fine for body text |
| Black text on #347AB1 | 4.56:1 | AA | Lc 32.4 | Non-text elements, placeholder text |
| #347AB1 text on white | 4.60:1 | AA | Lc 71.7 | Content text, not long reading |
| #347AB1 text on black | 4.56:1 | AA | Lc -30.0 | Non-text elements, placeholder text |
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 600.
-
Step 50
50
#F2F6FA
oklch(97.1% 0.007 247.9)
-
Step 100
100
#E2EBF3
oklch(93.6% 0.015 244.7)
-
Step 200
200
#CBDBEB
oklch(88.4% 0.028 248.1)
-
Step 300
300
#A7C5DF
oklch(81% 0.049 244.6)
-
Step 400
400
#76A6CF
oklch(70.7% 0.079 245)
-
Step 500
500
#518FC3
oklch(63% 0.102 245.7)
-
Step 600
600 (this color)
#347AB1
oklch(56.1% 0.11 245.4)
-
Step 700
700
#246597
oklch(49% 0.103 245.6)
-
Step 800
800
#20537A
oklch(42.7% 0.084 244.9)
-
Step 900
900
#204562
oklch(37.7% 0.066 244.5)
-
Step 950
950
#14283A
oklch(26.9% 0.043 247.2)
#347AB1 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) | #617CB3 | 0.047 |
| Deuteranopia (no green cones) | #5070B0 | 0.035 |
| Tritanopia (no blue cones) | #00878D | 0.081 |
| Achromatopsia (no color) | #757575 | 0.110 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #347AB1
#347AB1
oklch(56.1% 0.11 245.4)
- #A06521
#A06521
oklch(55.9% 0.11 65.1)
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 #347AB1, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Nice Blue #107AB0 ΔE 0.018
- Flat Blue #3C73A8 ΔE 0.022
- Windows Blue #3778BF ΔE 0.024
- Steel Blue #4682B4 ΔE 0.030
- Muted Blue #3B719F ΔE 0.033
- Cerulean #457B9D ΔE 0.035
- Dull Blue #49759C ΔE 0.035
- Cool Blue #4984B8 ΔE 0.037
Use #347AB1 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.