#737BDB
Closest named color: Soft Blue (#6488EA). oklch(62.1% 0.144 277.7), rgb(115, 123, 219).
Aa
Black text reads best on this color (5.58:1).
About this color
#737BDB is a medium-light, vivid blue. In OKLCH its lightness is 62%, its chroma 0.144 and its hue 278°. Its hue sits on the cool side of the wheel. The nearest named color is Soft Blue (#6488EA), ΔE 0.039 away. Black text reads best on it, at 5.58:1.
| Hue family | Blues |
| Lightness | medium-light (62%) |
| Chroma | vivid (0.144) |
| Temperature | cool |
| Nearest name | Soft Blue (#6488EA) |
| Black text | 5.58:1 |
| White text | 3.76:1 |
Values
| HEX | #737BDB |
| RGB | rgb(115, 123, 219) |
| HSL | hsl(235, 59%, 65%) |
| OKLCH | oklch(62.1% 0.144 277.7) |
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 #737BDB | 3.76:1 | AA large text | Lc -70.5 | Content text, not long reading |
| Black text on #737BDB | 5.58:1 | AA | Lc 39.1 | Non-text elements, placeholder text |
| #737BDB text on white | 3.76:1 | AA large text | Lc 65.0 | Content text, not long reading |
| #737BDB text on black | 5.58:1 | AA | Lc -36.7 | 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
#F4F5FC
oklch(97.1% 0.009 279.7)
-
Step 100
100
#E6E9F8
oklch(93.6% 0.02 276.9)
-
Step 200
200
#D2D7F3
oklch(88.4% 0.039 277.6)
-
Step 300
300
#B5BDEE
oklch(80.9% 0.07 277.5)
-
Step 400
400
#9099E6
oklch(70.7% 0.113 278)
-
Step 500
500 (this color)
#737BDB
oklch(62.1% 0.144 277.7)
-
Step 600
600
#6065CC
oklch(55.5% 0.156 277.9)
-
Step 700
700
#5054B1
oklch(49.2% 0.145 277.8)
-
Step 800
800
#41458F
oklch(42.7% 0.12 277.7)
-
Step 900
900
#373B72
oklch(37.8% 0.093 277.8)
-
Step 950
950
#202343
oklch(27.1% 0.059 277.6)
#737BDB 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) | #5488DF | 0.045 |
| Deuteranopia (no green cones) | #4C80D9 | 0.046 |
| Tritanopia (no blue cones) | #4D8FA0 | 0.126 |
| Achromatopsia (no color) | #848484 | 0.144 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #737BDB
#737BDB
oklch(62.1% 0.144 277.7)
- #9B8600
#9B8600
oklch(62% 0.128 98.1)
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 #737BDB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Soft Blue #6488EA ΔE 0.039
- Cornflower #6A79F7 ΔE 0.045
- Medium Purple #9370DB ΔE 0.052
- Medium Slate Blue #7B68EE ΔE 0.057
- Perrywinkle #8F8CE7 ΔE 0.063
- Lavender Blue #8B88F8 ΔE 0.063
- Dark Sky Blue #448EE4 ΔE 0.064
- Periwinkle #8E82FE ΔE 0.067
Use #737BDB 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.