#737CCF
Closest named color: Soft Blue (#6488EA). oklch(61.6% 0.125 277.4), rgb(115, 124, 207).
Aa
Black text reads best on this color (5.51:1).
About this color
#737CCF is a medium-dark, moderately saturated blue. In OKLCH its lightness is 62%, its chroma 0.125 and its hue 277°. Its hue sits on the cool side of the wheel. The nearest named color is Soft Blue (#6488EA), ΔE 0.048 away. Black text reads best on it, at 5.51:1.
| Hue family | Blues |
| Lightness | medium-dark (62%) |
| Chroma | moderately saturated (0.125) |
| Temperature | cool |
| Nearest name | Soft Blue (#6488EA) |
| Black text | 5.51:1 |
| White text | 3.80:1 |
Values
| HEX | #737CCF |
| RGB | rgb(115, 124, 207) |
| HSL | hsl(234, 49%, 63%) |
| OKLCH | oklch(61.6% 0.125 277.4) |
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 #737CCF | 3.80:1 | AA large text | Lc -71.0 | Content text, not long reading |
| Black text on #737CCF | 5.51:1 | AA | Lc 38.6 | Non-text elements, placeholder text |
| #737CCF text on white | 3.80:1 | AA large text | Lc 65.5 | Content text, not long reading |
| #737CCF text on black | 5.51:1 | AA | Lc -36.2 | 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
#F4F5FB
oklch(97.1% 0.008 278.6)
-
Step 100
100
#E7E9F6
oklch(93.6% 0.018 279.1)
-
Step 200
200
#D3D8F0
oklch(88.6% 0.033 276.3)
-
Step 300
300
#B6BEE9
oklch(81% 0.061 276.7)
-
Step 400
400
#919BDD
oklch(70.7% 0.097 277)
-
Step 500
500 (this color)
#737CCF
oklch(61.6% 0.125 277.4)
-
Step 600
600
#6169C1
oklch(55.7% 0.135 277.1)
-
Step 700
700
#5157A7
oklch(49.2% 0.126 277.5)
-
Step 800
800
#424787
oklch(42.7% 0.105 277.6)
-
Step 900
900
#373C6C
oklch(37.6% 0.082 277.2)
-
Step 950
950
#20243F
oklch(27.1% 0.05 276.1)
#737CCF 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) | #5D86D2 | 0.035 |
| Deuteranopia (no green cones) | #577FCD | 0.035 |
| Tritanopia (no blue cones) | #548D9B | 0.111 |
| Achromatopsia (no color) | #838383 | 0.125 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #737CCF
#737CCF
oklch(61.6% 0.125 277.4)
- #9A8407
#9A8407
oklch(61.5% 0.125 97.1)
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 #737CCF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Soft Blue #6488EA ΔE 0.048
- Medium Purple #9370DB ΔE 0.059
- Faded Blue #658CBB ΔE 0.061
- Deep Lilac #966EBD ΔE 0.063
- Cornflower #6A79F7 ΔE 0.063
- Dark Sky Blue #448EE4 ΔE 0.065
- Cool Blue #4984B8 ΔE 0.067
- Perrywinkle #8F8CE7 ΔE 0.067
Use #737CCF 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.