#737FB2
Closest named color: Faded Blue (#658CBB). oklch(60.7% 0.079 273.7), rgb(115, 127, 178).
Aa
Black text reads best on this color (5.40:1).
About this color
#737FB2 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 61%, its chroma 0.079 and its hue 274°. Its hue sits on the cool side of the wheel. The nearest named color is Faded Blue (#658CBB), ΔE 0.037 away. Black text reads best on it, at 5.40:1.
| Hue family | Blues |
| Lightness | medium-dark (61%) |
| Chroma | moderately saturated (0.079) |
| Temperature | cool |
| Nearest name | Faded Blue (#658CBB) |
| Black text | 5.40:1 |
| White text | 3.88:1 |
Values
| HEX | #737FB2 |
| RGB | rgb(115, 127, 178) |
| HSL | hsl(229, 29%, 57%) |
| OKLCH | oklch(60.7% 0.079 273.7) |
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 #737FB2 | 3.88:1 | AA large text | Lc -71.8 | Content text, not long reading |
| Black text on #737FB2 | 5.40:1 | AA | Lc 37.8 | Non-text elements, placeholder text |
| #737FB2 text on white | 3.88:1 | AA large text | Lc 66.3 | Content text, not long reading |
| #737FB2 text on black | 5.40:1 | AA | Lc -35.4 | 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 500.
-
Step 50
50
#F4F5F9
oklch(97.1% 0.005 275)
-
Step 100
100
#E7E9F2
oklch(93.5% 0.012 276.1)
-
Step 200
200
#D4D8E8
oklch(88.4% 0.022 274.7)
-
Step 300
300
#B8BFDA
oklch(80.8% 0.039 274)
-
Step 400
400
#949EC8
oklch(70.6% 0.063 274.3)
-
Step 500
500 (this color)
#737FB2
oklch(60.7% 0.079 273.7)
-
Step 600
600
#636FA6
oklch(55.5% 0.087 273.9)
-
Step 700
700
#525D8E
oklch(49.1% 0.08 273.5)
-
Step 800
800
#434C73
oklch(42.6% 0.066 273.4)
-
Step 900
900
#39405D
oklch(37.8% 0.051 273.3)
-
Step 950
950
#212537
oklch(26.9% 0.034 274.3)
#737FB2 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) | #6F84B4 | 0.014 |
| Deuteranopia (no green cones) | #6A7FB1 | 0.012 |
| Tritanopia (no blue cones) | #618991 | 0.071 |
| Achromatopsia (no color) | #818181 | 0.079 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #737FB2
#737FB2
oklch(60.7% 0.079 273.7)
- #928149
#928149
oklch(60.6% 0.078 93)
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 #737FB2, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Faded Blue #658CBB ΔE 0.037
- Dusty Blue #5A86AD ΔE 0.037
- Off Blue #5684AE ΔE 0.038
- Lavender Gray #7E7F9A ΔE 0.039
- Silver Lake Blue #778DA9 ΔE 0.047
- Cool Blue #4984B8 ΔE 0.048
- Steel Blue #4682B4 ΔE 0.051
- Blue Grey #758DA3 ΔE 0.052
Use #737FB2 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.