#045D7F
Closest named color: Deep Sea Blue (#015482). oklch(45% 0.091 232.5), rgb(4, 93, 127).
Aa
White text reads best on this color (7.29:1).
About this color
#045D7F is a dark, moderately saturated blue. In OKLCH its lightness is 45%, its chroma 0.091 and its hue 233°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Sea Blue (#015482), ΔE 0.030 away. White text reads best on it, at 7.29:1.
| Hue family | Blues |
| Lightness | dark (45%) |
| Chroma | moderately saturated (0.091) |
| Temperature | cool |
| Nearest name | Deep Sea Blue (#015482) |
| Black text | 2.87:1 |
| White text | 7.29:1 |
Values
| HEX | #045D7F |
| RGB | rgb(4, 93, 127) |
| HSL | hsl(197, 94%, 26%) |
| OKLCH | oklch(45% 0.091 232.5) |
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 #045D7F | 7.29:1 | AAA | Lc -89.7 | Fine for body text |
| Black text on #045D7F | 2.87:1 | Fails | Lc 19.2 | Dividers and decoration only |
| #045D7F text on white | 7.29:1 | AAA | Lc 84.8 | Fine for body text |
| #045D7F text on black | 2.87:1 | Fails | Lc -17.2 | 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 800.
-
Step 50
50
#F1F6F9
oklch(97% 0.007 233.6)
-
Step 100
100
#E0ECF3
oklch(93.6% 0.016 233)
-
Step 200
200
#C7DDEA
oklch(88.5% 0.03 233.6)
-
Step 300
300
#9FC7DE
oklch(80.9% 0.054 233.5)
-
Step 400
400
#67AACD
oklch(70.7% 0.085 232.5)
-
Step 500
500
#3694C0
oklch(63.1% 0.109 232.7)
-
Step 600
600
#007EAB
oklch(55.7% 0.114 232.4)
-
Step 700
700
#006990
oklch(49% 0.101 232.9)
-
Step 800
800 (this color)
#045D7F
oklch(45% 0.091 232.5)
-
Step 900
900
#0D4861
oklch(37.8% 0.071 232.1)
-
Step 950
950
#0B2A39
oklch(27% 0.045 233.1)
#045D7F 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) | #4C5C81 | 0.059 |
| Deuteranopia (no green cones) | #3D527E | 0.048 |
| Tritanopia (no blue cones) | #006669 | 0.053 |
| Achromatopsia (no color) | #565656 | 0.091 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #045D7F
#045D7F
oklch(45% 0.091 232.5)
- #7C4520
#7C4520
oklch(45% 0.091 52.1)
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 #045D7F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Sea Blue #015482 ΔE 0.030
- Light Navy Blue #2E5A88 ΔE 0.031
- Petrol #005F6A ΔE 0.038
- Light Navy #155084 ΔE 0.042
- Peacock Blue #016795 ΔE 0.042
- YInMn Blue #415A77 ΔE 0.044
- Dusk Blue #26538D ΔE 0.044
- Denim #3B638C ΔE 0.048
Use #045D7F 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.