#738CB3
Closest named color: Silver Lake Blue (#778DA9). oklch(63.5% 0.066 259.2), rgb(115, 140, 179).
Aa
Black text reads best on this color (6.13:1).
About this color
#738CB3 is a medium-light, muted blue. In OKLCH its lightness is 64%, its chroma 0.066 and its hue 259°. Its hue sits on the cool side of the wheel. The nearest named color is Silver Lake Blue (#778DA9), ΔE 0.017 away. Black text reads best on it, at 6.13:1.
| Hue family | Blues |
| Lightness | medium-light (64%) |
| Chroma | muted (0.066) |
| Temperature | cool |
| Nearest name | Silver Lake Blue (#778DA9) |
| Black text | 6.13:1 |
| White text | 3.42:1 |
Values
| HEX | #738CB3 |
| RGB | rgb(115, 140, 179) |
| HSL | hsl(217, 30%, 58%) |
| OKLCH | oklch(63.5% 0.066 259.2) |
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 #738CB3 | 3.42:1 | AA large text | Lc -67.2 | Content text, not long reading |
| Black text on #738CB3 | 6.13:1 | AA | Lc 42.3 | Non-text elements, placeholder text |
| #738CB3 text on white | 3.42:1 | AA large text | Lc 61.7 | Content text, not long reading |
| #738CB3 text on black | 6.13:1 | AA | Lc -40.0 | 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
#F4F5F8
oklch(97% 0.004 271.4)
-
Step 100
100
#E6EAF0
oklch(93.6% 0.009 258.3)
-
Step 200
200
#D2DAE5
oklch(88.6% 0.017 256.3)
-
Step 300
300
#B4C2D6
oklch(81% 0.032 257.2)
-
Step 400
400
#8EA2C1
oklch(70.8% 0.051 259.1)
-
Step 500
500 (this color)
#738CB3
oklch(63.5% 0.066 259.2)
-
Step 600
600
#5A749D
oklch(55.5% 0.071 259.3)
-
Step 700
700
#4A6186
oklch(49% 0.066 259.7)
-
Step 800
800
#3D506D
oklch(42.8% 0.054 258.7)
-
Step 900
900
#344258
oklch(37.6% 0.042 259.3)
-
Step 950
950
#1E2734
oklch(27% 0.028 257.5)
#738CB3 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) | #7E8EB5 | 0.016 |
| Deuteranopia (no green cones) | #7788B2 | 0.011 |
| Tritanopia (no blue cones) | #5F9499 | 0.058 |
| Achromatopsia (no color) | #8B8B8B | 0.066 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #738CB3
#738CB3
oklch(63.5% 0.066 259.2)
- #A0875D
#A0875D
oklch(63.6% 0.065 80.1)
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 #738CB3, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Silver Lake Blue #778DA9 ΔE 0.017
- Faded Blue #658CBB ΔE 0.020
- Blue Grey #758DA3 ΔE 0.026
- Dusty Blue #5A86AD ΔE 0.037
- Light Slate Gray #778899 ΔE 0.038
- Off Blue #5684AE ΔE 0.044
- Lavender Gray #7E7F9A ΔE 0.045
- Steel #738595 ΔE 0.045
Use #738CB3 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.