#347EAC
Closest named color: Steel Blue (#4682B4). oklch(56.7% 0.102 239.5), rgb(52, 126, 172).
Aa
Black text reads best on this color (4.72:1).
About this color
#347EAC is a medium-dark, moderately saturated blue. In OKLCH its lightness is 57%, its chroma 0.102 and its hue 239°. Its hue sits on the cool side of the wheel. The nearest named color is Steel Blue (#4682B4), ΔE 0.023 away. Black text reads best on it, at 4.72:1.
| Hue family | Blues |
| Lightness | medium-dark (57%) |
| Chroma | moderately saturated (0.102) |
| Temperature | cool |
| Nearest name | Steel Blue (#4682B4) |
| Black text | 4.72:1 |
| White text | 4.44:1 |
Values
| HEX | #347EAC |
| RGB | rgb(52, 126, 172) |
| HSL | hsl(203, 54%, 44%) |
| OKLCH | oklch(56.7% 0.102 239.5) |
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 #347EAC | 4.44:1 | AA large text | Lc -76.0 | Fine for body text |
| Black text on #347EAC | 4.72:1 | AA | Lc 33.5 | Non-text elements, placeholder text |
| #347EAC text on white | 4.44:1 | AA large text | Lc 70.6 | Content text, not long reading |
| #347EAC text on black | 4.72:1 | AA | Lc -31.1 | 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
#F2F6F9
oklch(97.1% 0.006 239.8)
-
Step 100
100
#E2EBF2
oklch(93.5% 0.014 241)
-
Step 200
200
#CBDCE8
oklch(88.5% 0.025 238.4)
-
Step 300
300
#A7C5DC
oklch(80.9% 0.046 241.2)
-
Step 400
400
#76A7CA
oklch(70.7% 0.073 240.2)
-
Step 500
500
#5091BC
oklch(63.1% 0.093 239.5)
-
Step 600
600 (this color)
#347EAC
oklch(56.7% 0.102 239.5)
-
Step 700
700
#226790
oklch(49.1% 0.094 239.3)
-
Step 800
800
#1E5475
oklch(42.6% 0.078 239.4)
-
Step 900
900
#1F465F
oklch(37.8% 0.062 239.4)
-
Step 950
950
#132937
oklch(27% 0.038 238.3)
#347EAC 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) | #697EAE | 0.055 |
| Deuteranopia (no green cones) | #5872AB | 0.045 |
| Tritanopia (no blue cones) | #008A8E | 0.071 |
| Achromatopsia (no color) | #787878 | 0.102 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #347EAC
#347EAC
oklch(56.7% 0.102 239.5)
- #A26733
#A26733
oklch(56.8% 0.101 59.8)
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 #347EAC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Steel Blue #4682B4 ΔE 0.023
- Nice Blue #107AB0 ΔE 0.024
- Cerulean #457B9D ΔE 0.025
- Flat Blue #3C73A8 ΔE 0.031
- Cool Blue #4984B8 ΔE 0.032
- Stormy Blue #507B9C ΔE 0.032
- Dull Blue #49759C ΔE 0.033
- Blue NCS #118AB2 ΔE 0.034
Use #347EAC 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.