#737E99
Closest named color: Lavender Gray (#7E7F9A). oklch(59.4% 0.043 267.7), rgb(115, 126, 153).
Aa
Black text reads best on this color (5.17:1).
About this color
#737E99 is a medium-dark, muted blue. In OKLCH its lightness is 59%, its chroma 0.043 and its hue 268°. Its hue sits on the cool side of the wheel. The nearest named color is Lavender Gray (#7E7F9A), ΔE 0.016 away. Black text reads best on it, at 5.17:1.
| Hue family | Blues |
| Lightness | medium-dark (59%) |
| Chroma | muted (0.043) |
| Temperature | cool |
| Nearest name | Lavender Gray (#7E7F9A) |
| Black text | 5.17:1 |
| White text | 4.05:1 |
Values
| HEX | #737E99 |
| RGB | rgb(115, 126, 153) |
| HSL | hsl(223, 16%, 53%) |
| OKLCH | oklch(59.4% 0.043 267.7) |
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 #737E99 | 4.05:1 | AA large text | Lc -73.3 | Content text, not long reading |
| Black text on #737E99 | 5.17:1 | AA | Lc 36.3 | Non-text elements, placeholder text |
| #737E99 text on white | 4.05:1 | AA large text | Lc 67.8 | Content text, not long reading |
| #737E99 text on black | 5.17:1 | AA | Lc -33.8 | 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
#F4F5F7
oklch(97% 0.003 264.5)
-
Step 100
100
#E8EAEE
oklch(93.7% 0.006 264.5)
-
Step 200
200
#D6D9E1
oklch(88.5% 0.011 269.5)
-
Step 300
300
#BAC0CF
oklch(80.8% 0.022 268.4)
-
Step 400
400
#97A0B6
oklch(70.6% 0.034 267.8)
-
Step 500
500 (this color)
#737E99
oklch(59.4% 0.043 267.7)
-
Step 600
600
#677390
oklch(55.6% 0.047 267.3)
-
Step 700
700
#56607A
oklch(49.1% 0.044 268.4)
-
Step 800
800
#464F63
oklch(42.8% 0.035 265.9)
-
Step 900
900
#3B4151
oklch(37.6% 0.029 268.9)
-
Step 950
950
#23262F
oklch(26.9% 0.017 270.7)
#737E99 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) | #76809A | 0.007 |
| Deuteranopia (no green cones) | #737D98 | 0.003 |
| Tritanopia (no blue cones) | #698387 | 0.039 |
| Achromatopsia (no color) | #7E7E7E | 0.043 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #737E99
#737E99
oklch(59.4% 0.043 267.7)
- #897D61
#897D61
oklch(59.3% 0.043 87.5)
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 #737E99, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Lavender Gray #7E7F9A ΔE 0.016
- Slate Gray #708090 ΔE 0.018
- Steel #738595 ΔE 0.023
- Grey Blue #647D8E ΔE 0.028
- Steel Grey #6F828A ΔE 0.030
- Light Slate Gray #778899 ΔE 0.030
- Battleship Grey #6B7C85 ΔE 0.033
- Dusty Blue #5A86AD ΔE 0.041
Use #737E99 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.