#375BAF
Closest named color: Mid Blue (#276AB3). oklch(49% 0.14 264.4), rgb(55, 91, 175).
Aa
White text reads best on this color (6.40:1).
About this color
#375BAF is a medium-dark, vivid blue. In OKLCH its lightness is 49%, its chroma 0.140 and its hue 264°. Its hue sits on the cool side of the wheel. The nearest named color is Mid Blue (#276AB3), ΔE 0.040 away. White text reads best on it, at 6.40:1.
| Hue family | Blues |
| Lightness | medium-dark (49%) |
| Chroma | vivid (0.140) |
| Temperature | cool |
| Nearest name | Mid Blue (#276AB3) |
| Black text | 3.27:1 |
| White text | 6.40:1 |
Values
| HEX | #375BAF |
| RGB | rgb(55, 91, 175) |
| HSL | hsl(222, 52%, 45%) |
| OKLCH | oklch(49% 0.14 264.4) |
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 #375BAF | 6.40:1 | AA | Lc -86.6 | Fine for body text |
| Black text on #375BAF | 3.27:1 | AA large text | Lc 22.5 | Dividers and decoration only |
| #375BAF text on white | 6.40:1 | AA | Lc 81.5 | Fine for body text |
| #375BAF text on black | 3.27:1 | AA large text | Lc -20.4 | Dividers and decoration only |
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 700.
-
Step 50
50
#F2F5FC
oklch(97% 0.01 267.4)
-
Step 100
100
#E3EAF7
oklch(93.6% 0.019 263)
-
Step 200
200
#CDD9F3
oklch(88.4% 0.038 265.8)
-
Step 300
300
#ABC1ED
oklch(80.9% 0.067 264.1)
-
Step 400
400
#7E9FE5
oklch(70.6% 0.11 264.5)
-
Step 500
500
#5E86DD
oklch(63.1% 0.139 264.2)
-
Step 600
600
#456ECB
oklch(55.6% 0.151 264.2)
-
Step 700
700 (this color)
#375BAF
oklch(49% 0.14 264.4)
-
Step 800
800
#2E4B8E
oklch(42.7% 0.116 264.4)
-
Step 900
900
#293F71
oklch(37.7% 0.09 264.6)
-
Step 950
950
#182542
oklch(26.9% 0.057 264.6)
#375BAF 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) | #2F65B2 | 0.027 |
| Deuteranopia (no green cones) | #135AAD | 0.028 |
| Tritanopia (no blue cones) | #006F7C | 0.116 |
| Achromatopsia (no color) | #5F5F5F | 0.140 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #375BAF
#375BAF
oklch(49% 0.14 264.4)
- #7B5B00
#7B5B00
oklch(49.1% 0.101 84.7)
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 #375BAF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mid Blue #276AB3 ΔE 0.040
- Denim Blue #3B5B92 ΔE 0.047
- French Blue #436BAD ΔE 0.049
- Dusky Blue #475F94 ΔE 0.050
- Dusk Blue #26538D ΔE 0.061
- Twilight #4E518B ΔE 0.064
- Light Navy Blue #2E5A88 ΔE 0.065
- Peacock Blue #016795 ΔE 0.065
Use #375BAF 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.